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ae5f4e9a742b07e004b330c04a72fac4457c9b58
openal-soft/Router/alc.cpp
T
Chris Robinson ae5f4e9a74 Initial import
2007-11-13 18:02:18 -08:00

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/**
* OpenAL cross platform audio library
* Copyright (C) 1999-2000 by authors.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#ifndef __MINGW32__
#define _CRT_SECURE_NO_DEPRECATE // get rid of sprintf security warnings on VS2005
#endif
#include <stdlib.h>
#include <memory.h>
#define AL_BUILD_LIBRARY
#include <al/alc.h>
#include <stdio.h>
#include <tchar.h>
#include <assert.h>
#include <stddef.h>
#include <windows.h>
#if defined(_MSC_VER)
#include <crtdbg.h>
#else
#define _malloc_dbg(s,x,f,l) malloc(s)
#define _realloc_dbg(p,s,x,f,l) realloc(p,s)
#endif
#include <objbase.h>
#ifndef __MINGW32__
#include <atlconv.h>
#else
#define T2A(x) x
#endif
#include <mmsystem.h>
#include "OpenAL32.h"
//*****************************************************************************
//*****************************************************************************
//
// Defines
//
//*****************************************************************************
//*****************************************************************************
typedef struct ALCextension_struct
{
const char* ename;
} ALCextension;
typedef struct
{
const char* ename;
ALenum value;
} ALCRouterEnum;
typedef struct ALCfunction_struct
{
const char* fname;
ALvoid* address;
} ALCfunction;
//*****************************************************************************
//*****************************************************************************
//
// Global Vars
//
//*****************************************************************************
//*****************************************************************************
ALlist* alContextList = 0;
ALCcontext* alCurrentContext = 0;
ALCdevice* g_CaptureDevice = NULL;
//*****************************************************************************
//*****************************************************************************
//
// Local Vars
//
//*****************************************************************************
//*****************************************************************************
//
// The values of the enums supported by OpenAL.
//
static ALCRouterEnum alcEnums[] =
{
// Types
{"ALC_INVALID", ALC_INVALID},
{"ALC_FALSE", ALC_FALSE},
{"ALC_TRUE", ALC_TRUE},
// ALC Properties
{"ALC_MAJOR_VERSION", ALC_MAJOR_VERSION},
{"ALC_MINOR_VERSION", ALC_MINOR_VERSION},
{"ALC_ATTRIBUTES_SIZE", ALC_ATTRIBUTES_SIZE},
{"ALC_ALL_ATTRIBUTES", ALC_ALL_ATTRIBUTES},
{"ALC_DEFAULT_DEVICE_SPECIFIER", ALC_DEFAULT_DEVICE_SPECIFIER},
{"ALC_DEVICE_SPECIFIER", ALC_DEVICE_SPECIFIER},
{"ALC_EXTENSIONS", ALC_EXTENSIONS},
{"ALC_FREQUENCY", ALC_FREQUENCY},
{"ALC_REFRESH", ALC_REFRESH},
{"ALC_SYNC", ALC_SYNC},
{"ALC_MONO_SOURCES", ALC_MONO_SOURCES},
{"ALC_STEREO_SOURCES", ALC_STEREO_SOURCES},
{"ALC_CAPTURE_DEVICE_SPECIFIER", ALC_CAPTURE_DEVICE_SPECIFIER},
{"ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER", ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER},
{"ALC_CAPTURE_SAMPLES", ALC_CAPTURE_SAMPLES},
// New Enumeration extension
{"ALC_DEFAULT_ALL_DEVICES_SPECIFIER", ALC_DEFAULT_ALL_DEVICES_SPECIFIER},
{"ALC_ALL_DEVICES_SPECIFIER", ALC_ALL_DEVICES_SPECIFIER},
// ALC Error Message
{"ALC_NO_ERROR", ALC_NO_ERROR},
{"ALC_INVALID_DEVICE", ALC_INVALID_DEVICE},
{"ALC_INVALID_CONTEXT", ALC_INVALID_CONTEXT},
{"ALC_INVALID_ENUM", ALC_INVALID_ENUM},
{"ALC_INVALID_VALUE", ALC_INVALID_VALUE},
{"ALC_OUT_OF_MEMORY", ALC_OUT_OF_MEMORY},
// Default
{0, (ALenum)0}
};
//
// Our function pointers.
//
static ALCfunction alcFunctions[] =
{
{"alcCreateContext", (ALvoid*)alcCreateContext},
{"alcMakeContextCurrent", (ALvoid*)alcMakeContextCurrent},
{"alcProcessContext", (ALvoid*)alcProcessContext},
{"alcSuspendContext", (ALvoid*)alcSuspendContext},
{"alcDestroyContext", (ALvoid*)alcDestroyContext},
{"alcGetCurrentContext", (ALvoid*)alcGetCurrentContext},
{"alcGetContextsDevice", (ALvoid*)alcGetContextsDevice},
{"alcOpenDevice", (ALvoid*)alcOpenDevice},
{"alcCloseDevice", (ALvoid*)alcCloseDevice},
{"alcGetError", (ALvoid*)alcGetError},
{"alcIsExtensionPresent", (ALvoid*)alcIsExtensionPresent},
{"alcGetProcAddress", (ALvoid*)alcGetProcAddress},
{"alcGetEnumValue", (ALvoid*)alcGetEnumValue},
{"alcGetString", (ALvoid*)alcGetString},
{"alcGetIntegerv", (ALvoid*)alcGetIntegerv},
{"alcCaptureOpenDevice", (ALvoid*)alcCaptureOpenDevice},
{"alcCaptureCloseDevice", (ALvoid*)alcCaptureCloseDevice},
{"alcCaptureStart", (ALvoid*)alcCaptureStart},
{"alcCaptureStop", (ALvoid*)alcCaptureStop},
{"alcCaptureSamples", (ALvoid*)alcCaptureSamples},
{0, (ALvoid*)0}
};
//
// Our extensions.
//
static ALCextension alcExtensions[] =
{
"ALC_ENUMERATION_EXT",
"ALC_ENUMERATE_ALL_EXT",
"ALC_EXT_CAPTURE",
0
};
// Error strings
static ALenum LastError = ALC_NO_ERROR;
static const ALCchar alcNoError[] = "No Error";
static const ALCchar alcErrInvalidDevice[] = "Invalid Device";
static const ALCchar alcErrInvalidContext[] = "Invalid Context";
static const ALCchar alcErrInvalidEnum[] = "Invalid Enum";
static const ALCchar alcErrInvalidValue[] = "Invalid Value";
static ALint alcMajorVersion = 1;
static ALint alcMinorVersion = 1;
// Enumeration stuff
ALDEVICE *g_pDeviceList = NULL; // ALC_ENUMERATION_EXT Device List
ALDEVICE *g_pCaptureDeviceList = NULL; // ALC_ENUMERATION_EXT Capture Device List
ALDEVICE *g_pAllDevicesList = NULL; // ALC_ENUMERATE_ALL_EXT Device List
ALchar *pszDefaultDeviceSpecifier = NULL;
ALchar *pszDeviceSpecifierList = NULL;
ALchar *pszDefaultCaptureDeviceSpecifier = NULL;
ALchar *pszCaptureDeviceSpecifierList = NULL;
ALchar *pszDefaultAllDevicesSpecifier = NULL;
ALchar *pszAllDevicesSpecifierList = NULL;
ALchar szEmptyString[] = "";
typedef BOOL (CALLBACK *LPDSENUMCALLBACKA)(LPGUID, LPCSTR, LPCSTR, LPVOID);
typedef HRESULT (WINAPI *LPDIRECTSOUNDENUMERATEA)(LPDSENUMCALLBACKA pDSEnumCallback, LPVOID pContext);
typedef HRESULT (WINAPI *LPDIRECTSOUNDCAPTUREENUMERATEA)(LPDSENUMCALLBACKA pDSEnumCallback, LPVOID pContext);
BOOL CALLBACK DSEnumCallback(LPGUID lpGuid, LPCSTR lpcstrDescription, LPCSTR lpcstrModule, LPVOID lpContext);
bool GetDefaultPlaybackDeviceName(char **pszName);
bool GetDefaultCaptureDeviceName(char **pszName);
bool FindDevice(ALDEVICE *pDeviceList, char *szDeviceName, bool bExactMatch, char **ppszDefaultName);
bool HasDLLAlreadyBeenUsed(ALDEVICE *pDeviceList, TCHAR *szDLLName);
//bool ValidCaptureDevice(const char *szCaptureDeviceName);
//*****************************************************************************
//*****************************************************************************
//
// Logging Options
//
//*****************************************************************************
//*****************************************************************************
// NOTE : LOG macro below requires a compiler newer than Visual Studio 6
//#define _LOGCALLS
#ifdef _LOGCALLS
void OutputMessage(const char *szTest,...);
#define LOG(x, ...) OutputMessage(x, ##__VA_ARGS__)
#define LOGFILENAME "OpenALCalls.txt"
#endif
//*****************************************************************************
//*****************************************************************************
//
// Local Functions
//
//*****************************************************************************
//*****************************************************************************
//*****************************************************************************
// GetLoadedModuleDirectory
//*****************************************************************************
BOOL GetLoadedModuleDirectory(LPCTSTR moduleName,
LPTSTR directoryContainingModule,
DWORD directoryContainingModuleLength) {
// Attempts to find the given module in the address space of this
// process and return the directory containing the module. A NULL
// moduleName means to look up the directory containing the
// application rather than any given loaded module. There is no
// trailing backslash ('\') on the returned path. If the named
// module was found in the address space of this process, returns
// TRUE, otherwise returns FALSE. directoryContainingModule may be
// mutated regardless.
HMODULE module = NULL;
TCHAR fileDrive[MAX_PATH + 1];
TCHAR fileDir[MAX_PATH + 1];
TCHAR fileName[MAX_PATH + 1];
TCHAR fileExt[MAX_PATH + 1];
DWORD numChars;
if (moduleName != NULL) {
module = GetModuleHandle(moduleName);
if (module == NULL)
return FALSE;
}
numChars = GetModuleFileName(module,
directoryContainingModule,
directoryContainingModuleLength);
if (numChars == 0)
return FALSE;
_splitpath(directoryContainingModule, fileDrive, fileDir, fileName, fileExt);
_tcscpy(directoryContainingModule, fileDrive);
_tcscat(directoryContainingModule, fileDir);
return TRUE;
}
//*****************************************************************************
// AddDevice
//*****************************************************************************
void AddDevice(const char *pszDeviceName, TCHAR *pszHostDLLFilename, ALDEVICE **ppDeviceList)
{
// Adds pszDeviceName nad pszHostDLLFilename to the given Device List *IF* pszDeviceName has
// not already been added.
ALDEVICE *pNewDevice, *pTempDevice;
// Check if unique
for (pTempDevice = *ppDeviceList; pTempDevice; pTempDevice = pTempDevice->pNextDevice)
{
if (strcmp(pTempDevice->pszDeviceName, pszDeviceName) == 0)
break;
}
if (pTempDevice)
return;
pNewDevice = (ALDEVICE*)malloc(sizeof(ALDEVICE));
if (pNewDevice)
{
pNewDevice->pszDeviceName = (char*)malloc((strlen(pszDeviceName)+1)*sizeof(char));
if (pNewDevice->pszDeviceName)
strcpy(pNewDevice->pszDeviceName, pszDeviceName);
pNewDevice->pszHostDLLFilename = (TCHAR*)malloc((_tcslen(pszHostDLLFilename)+1)*sizeof(TCHAR));
if (pNewDevice->pszHostDLLFilename)
_tcscpy(pNewDevice->pszHostDLLFilename, pszHostDLLFilename);
pNewDevice->pNextDevice = NULL;
if (*ppDeviceList)
{
pTempDevice = *ppDeviceList;
while (pTempDevice->pNextDevice)
pTempDevice = pTempDevice->pNextDevice;
pTempDevice->pNextDevice = pNewDevice;
}
else
{
*ppDeviceList = pNewDevice;
}
}
}
//*****************************************************************************
// BuildDeviceList
//*****************************************************************************
ALvoid BuildDeviceList()
{
// This function will scan several directories (details below) looking for
// OpenAL DLLs. Each OpenAL DLL found will be opened and queried for it's
// list of playback and capture devices. All the information is stored
// in various lists: -
//
// g_pDevicesList : List of Playback Devices
// g_pCaptureDeviceList : List of Capture devices
// g_pAllDevicesList : List of *all* possible Playback devices (ALC_ENUMERATE_ALL_EXT support)
//
// In addition this function allocates memory for the strings that will
// be returned to the application in response to alcGetString queries.
//
// pszDefaultDeviceSpecifier : Default Playback Device
// pszDeviceSpecifierList : List of Playback Devices
// pszDefaultCaptureDeviceSpecifier : Default Capture Device
// pszCaptureDeviceSpecifierList : List of Capture Devices
// pszDefaultAllDevicesSpecifier : Default *all* Playback Device (ALC_ENUMERATE_ALL_EXT support)
// pszAllDevicesSpecifierList : List of *all* Playback Devices (ALC_ENUMERATE_ALL_EXT support)
WIN32_FIND_DATA findData;
HANDLE searchHandle = INVALID_HANDLE_VALUE;
TCHAR searchName[MAX_PATH + 1];
BOOL found = FALSE;
const ALCchar* specifier = 0;
ALuint specifierSize = 0;
ALCdevice *device;
void *context;
bool bUsedWrapper = false;
ALDEVICE *pDevice = NULL;
// Only build the list once ...
if (((g_pDeviceList == NULL) && (waveOutGetNumDevs())) ||
((g_pCaptureDeviceList == NULL) && (waveInGetNumDevs())))
{
//
// Directory[0] is the directory containing OpenAL32.dll
// Directory[1] is the current directory.
// Directory[2] is the current app directory
// Directory[3] is the system directory
//
TCHAR dir[4][MAX_PATH + 1] = { 0 };
int numDirs = 0;
int i;
HINSTANCE dll = 0;
ALCAPI_GET_STRING alcGetStringFxn = 0;
ALCAPI_IS_EXTENSION_PRESENT alcIsExtensionPresentFxn = 0;
ALCAPI_OPEN_DEVICE alcOpenDeviceFxn = 0;
ALCAPI_CREATE_CONTEXT alcCreateContextFxn = 0;
ALCAPI_MAKE_CONTEXT_CURRENT alcMakeContextCurrentFxn = 0;
ALCAPI_DESTROY_CONTEXT alcDestroyContextFxn = 0;
ALCAPI_CLOSE_DEVICE alcCloseDeviceFxn = 0;
//
// Construct our search paths
//
if (GetLoadedModuleDirectory("OpenAL32.dll", dir[0], MAX_PATH)) {
++numDirs;
}
GetCurrentDirectory(MAX_PATH, dir[1]);
_tcscat(dir[1], _T("\\"));
++numDirs;
GetLoadedModuleDirectory(NULL, dir[2], MAX_PATH);
++numDirs;
GetSystemDirectory(dir[3], MAX_PATH);
_tcscat(dir[3], _T("\\"));
++numDirs;
//
// Begin searching for additional OpenAL implementations.
//
for(i = 0; i < numDirs; i++)
{
if ((i == 0) && (strcmp(dir[0], dir[3]) == 0)) // if searching router dir and router dir is sys dir, skip search
continue;
if ((i == 2) && (strcmp(dir[2], dir[1]) == 0)) // if searching app dir and app dir is current dir, skip search
continue;
if ((i == 3) && ((strcmp(dir[3], dir[2]) == 0) || (strcmp(dir[3], dir[1]) == 0))) // if searching sys dir and sys dir is either current or app directory, skip search
continue;
_tcscpy(searchName, dir[i]);
_tcscat(searchName, _T("*oal.dll"));
searchHandle = FindFirstFile(searchName, &findData);
if(searchHandle != INVALID_HANDLE_VALUE)
{
while(TRUE)
{
//
// if this is an OpenAL32.dll, skip it -- it's probably a router and shouldn't be enumerated regardless
//
_tcscpy(searchName, dir[i]);
_tcscat(searchName, findData.cFileName);
TCHAR cmpName[MAX_PATH];
_tcscpy(cmpName, searchName);
_tcsupr(cmpName);
if (_tcsstr(cmpName, _T("OPENAL32.DLL")) == 0)
{
boolean skipSearch = false;
// don't search the same DLL twice
TCHAR *szDLLName = _tcsrchr(searchName, _T('\\'));
if (szDLLName)
szDLLName++; // Skip over the '\'
else
szDLLName = searchName;
skipSearch = HasDLLAlreadyBeenUsed(g_pDeviceList, szDLLName);
if (!skipSearch)
skipSearch = HasDLLAlreadyBeenUsed(g_pCaptureDeviceList, szDLLName);
if (!skipSearch)
skipSearch = HasDLLAlreadyBeenUsed(g_pAllDevicesList, szDLLName);
if (skipSearch == false) {
dll = LoadLibrary(searchName);
if(dll)
{
alcOpenDeviceFxn = (ALCAPI_OPEN_DEVICE)GetProcAddress(dll, "alcOpenDevice");
alcCreateContextFxn = (ALCAPI_CREATE_CONTEXT)GetProcAddress(dll, "alcCreateContext");
alcMakeContextCurrentFxn = (ALCAPI_MAKE_CONTEXT_CURRENT)GetProcAddress(dll, "alcMakeContextCurrent");
alcGetStringFxn = (ALCAPI_GET_STRING)GetProcAddress(dll, "alcGetString");
alcDestroyContextFxn = (ALCAPI_DESTROY_CONTEXT)GetProcAddress(dll, "alcDestroyContext");
alcCloseDeviceFxn = (ALCAPI_CLOSE_DEVICE)GetProcAddress(dll, "alcCloseDevice");
alcIsExtensionPresentFxn = (ALCAPI_IS_EXTENSION_PRESENT)GetProcAddress(dll, "alcIsExtensionPresent");
if ((alcOpenDeviceFxn != 0) &&
(alcCreateContextFxn != 0) &&
(alcMakeContextCurrentFxn != 0) &&
(alcGetStringFxn != 0) &&
(alcDestroyContextFxn != 0) &&
(alcCloseDeviceFxn != 0) &&
(alcIsExtensionPresentFxn != 0)) {
bool bAddToAllDevicesList = false;
if (alcIsExtensionPresentFxn(NULL, "ALC_ENUMERATE_ALL_EXT")) {
// this DLL can enumerate *all* devices -- so add complete list of devices
specifier = alcGetStringFxn(0, ALC_ALL_DEVICES_SPECIFIER);
if ((specifier) && strlen(specifier))
{
do {
AddDevice(specifier, searchName, &g_pAllDevicesList);
specifier += strlen((char *)specifier) + 1;
} while (strlen((char *)specifier) > 0);
}
} else {
bAddToAllDevicesList = true;
}
if (alcIsExtensionPresentFxn(NULL, "ALC_ENUMERATION_EXT")) {
// this DLL can enumerate devices -- so add complete list of devices
specifier = alcGetStringFxn(0, ALC_DEVICE_SPECIFIER);
if ((specifier) && strlen(specifier))
{
do {
AddDevice(specifier, searchName, &g_pDeviceList);
if (bAddToAllDevicesList)
AddDevice(specifier, searchName, &g_pAllDevicesList);
specifier += strlen((char *)specifier) + 1;
} while (strlen((char *)specifier) > 0);
}
} else {
// no enumeration ability, -- so just add default device to the list
device = alcOpenDeviceFxn(NULL);
if (device != NULL) {
context = alcCreateContextFxn(device, NULL);
alcMakeContextCurrentFxn((ALCcontext *)context);
if (context != NULL) {
specifier = alcGetStringFxn(device, ALC_DEVICE_SPECIFIER);
if ((specifier) && strlen(specifier))
{
AddDevice(specifier, searchName, &g_pDeviceList);
if (bAddToAllDevicesList)
AddDevice(specifier, searchName, &g_pAllDevicesList);
}
alcMakeContextCurrentFxn((ALCcontext *)NULL);
alcDestroyContextFxn((ALCcontext *)context);
alcCloseDeviceFxn(device);
}
}
}
// add to capture device list
if (_tcsstr(cmpName, _T("CT_OAL.DLL")) == 0) {
// Skip native AL component (will contain same Capture List as the wrap_oal component)
if (alcIsExtensionPresentFxn(NULL, "ALC_EXT_CAPTURE")) {
// this DLL supports capture -- so add complete list of capture devices
specifier = alcGetStringFxn(0, ALC_CAPTURE_DEVICE_SPECIFIER);
if ((specifier) && strlen(specifier))
{
do {
AddDevice(specifier, searchName, &g_pCaptureDeviceList);
specifier += strlen((char *)specifier) + 1;
} while (strlen((char *)specifier) > 0);
}
}
}
}
FreeLibrary(dll);
dll = 0;
}
}
}
if(!FindNextFile(searchHandle, &findData))
{
if(GetLastError() == ERROR_NO_MORE_FILES)
{
break;
}
}
}
FindClose(searchHandle);
searchHandle = INVALID_HANDLE_VALUE;
}
}
// We now have a list of all the Device Names and their associated DLLs.
// Put the names in the appropriate strings
ALuint uiLength;
ALchar *pszTemp;
char *pszDefaultName = NULL;
bool bFound = false;
if (g_pDeviceList)
{
uiLength = 0;
for (pDevice = g_pDeviceList; pDevice; pDevice = pDevice->pNextDevice)
uiLength += (strlen(pDevice->pszDeviceName) + 1);
pszDeviceSpecifierList = (ALchar*)malloc((uiLength + 1) * sizeof(ALchar));
if (pszTemp = pszDeviceSpecifierList)
{
memset(pszDeviceSpecifierList, 0, (uiLength + 1) * sizeof(ALchar));
for (pDevice = g_pDeviceList; pDevice; pDevice = pDevice->pNextDevice)
{
strcpy(pszTemp, pDevice->pszDeviceName);
pszTemp += (strlen(pDevice->pszDeviceName) + 1);
}
}
// Determine what the Default Device should be
if (GetDefaultPlaybackDeviceName(&pszDefaultName))
{
bFound = false;
// Search for an exact match first
bFound = FindDevice(g_pDeviceList, pszDefaultName, true, &pszDefaultDeviceSpecifier);
// If we haven't found a match ... search for a partial match if name contains 'X-Fi'
if ((!bFound) && (strstr(pszDefaultName, "X-Fi")))
bFound = FindDevice(g_pDeviceList, "X-Fi", false, &pszDefaultDeviceSpecifier);
// If we haven't found a match ... search for a partial match if name contains 'Audigy'
if ((!bFound) && (strstr(pszDefaultName, "Audigy")))
bFound = FindDevice(g_pDeviceList, "Audigy", false, &pszDefaultDeviceSpecifier);
// If we haven't found a match ... search for a partial match with 'Generic Hardware'
if (!bFound)
bFound = FindDevice(g_pDeviceList, "Generic Hardware", false, &pszDefaultDeviceSpecifier);
// If we haven't found a match ... search for a partial match with 'Generic Software'
if (!bFound)
bFound = FindDevice(g_pDeviceList, "Generic Software", false, &pszDefaultDeviceSpecifier);
// If we STILL haven't found a match ... pick the 1st device!
if (!bFound)
{
pszDefaultDeviceSpecifier = (char*)malloc((strlen(g_pDeviceList->pszDeviceName) + 1) * sizeof(char));
if (pszDefaultDeviceSpecifier)
strcpy(pszDefaultDeviceSpecifier, g_pDeviceList->pszDeviceName);
}
free(pszDefaultName);
pszDefaultName = NULL;
}
}
if (g_pCaptureDeviceList)
{
uiLength = 0;
for (pDevice = g_pCaptureDeviceList; pDevice; pDevice = pDevice->pNextDevice)
uiLength += (strlen(pDevice->pszDeviceName) + 1);
pszCaptureDeviceSpecifierList = (ALchar*)malloc((uiLength + 1) * sizeof(ALchar));
if (pszTemp = pszCaptureDeviceSpecifierList)
{
memset(pszCaptureDeviceSpecifierList, 0, (uiLength + 1) * sizeof(ALchar));
for (pDevice = g_pCaptureDeviceList; pDevice; pDevice = pDevice->pNextDevice)
{
strcpy(pszTemp, pDevice->pszDeviceName);
pszTemp += (strlen(pDevice->pszDeviceName) + 1);
}
}
if (GetDefaultCaptureDeviceName(&pszDefaultName))
{
bFound = false;
// Search for an exact match first
bFound = FindDevice(g_pCaptureDeviceList, pszDefaultName, true, &pszDefaultCaptureDeviceSpecifier);
// If we haven't found a match, truncate the default name to 32 characters (MMSYSTEM limitation)
if ((!bFound) && (strlen(pszDefaultName) > 31))
{
pszDefaultName[31] = '\0';
bFound = FindDevice(g_pCaptureDeviceList, pszDefaultName, true, &pszDefaultCaptureDeviceSpecifier);
}
// If we haven't found a match ... pick the 1st device!
if (!bFound)
{
pszDefaultCaptureDeviceSpecifier = (char*)malloc((strlen(g_pCaptureDeviceList->pszDeviceName) + 1) * sizeof(char));
if (pszDefaultCaptureDeviceSpecifier)
strcpy(pszDefaultCaptureDeviceSpecifier, g_pCaptureDeviceList->pszDeviceName);
}
free(pszDefaultName);
pszDefaultName = NULL;
}
}
if (g_pAllDevicesList)
{
uiLength = 0;
for (pDevice = g_pAllDevicesList; pDevice; pDevice = pDevice->pNextDevice)
uiLength += (strlen(pDevice->pszDeviceName) + 1);
pszAllDevicesSpecifierList = (ALchar*)malloc((uiLength + 1) * sizeof(ALchar));
if (pszTemp = pszAllDevicesSpecifierList)
{
memset(pszAllDevicesSpecifierList, 0, (uiLength + 1) * sizeof(ALchar));
for (pDevice = g_pAllDevicesList; pDevice; pDevice = pDevice->pNextDevice)
{
strcpy(pszTemp, pDevice->pszDeviceName);
pszTemp += (strlen(pDevice->pszDeviceName) + 1);
}
}
// Determine what the Default Device should be
if (GetDefaultPlaybackDeviceName(&pszDefaultName))
{
bFound = false;
// If the (regular) default Playback device exists in this list ... use that
bFound = FindDevice(g_pAllDevicesList, pszDefaultDeviceSpecifier, true, &pszDefaultAllDevicesSpecifier);
// If we haven't found a match ... pick a partial match with the Default Device Name
if (!bFound)
bFound = FindDevice(g_pAllDevicesList, pszDefaultName, false, &pszDefaultAllDevicesSpecifier);
// If we STILL haven't found a match ... pick the 1st device!
if (!bFound)
{
pszDefaultAllDevicesSpecifier = (char*)malloc((strlen(g_pAllDevicesList->pszDeviceName) + 1) * sizeof(char));
if (pszDefaultAllDevicesSpecifier)
strcpy(pszDefaultAllDevicesSpecifier, g_pAllDevicesList->pszDeviceName);
}
free(pszDefaultName);
pszDefaultName = NULL;
}
}
}
return;
}
//*****************************************************************************
// HasDLLAlreadyBeenUsed
//*****************************************************************************
bool HasDLLAlreadyBeenUsed(ALDEVICE *pDeviceList, TCHAR *szDLLName)
{
// Checks if an OpenAL DLL has already been enumerated
ALDEVICE *pDevice = NULL;
TCHAR *szHostDLLName;
bool bReturn = false;
for (pDevice = pDeviceList; pDevice; pDevice = pDevice->pNextDevice)
{
szHostDLLName = _tcsrchr(pDevice->pszHostDLLFilename, _T('\\'));
if (szHostDLLName)
szHostDLLName++; // Skip over the '\'
else
szHostDLLName = pDevice->pszHostDLLFilename;
if (_tcscmp(szHostDLLName, szDLLName) == 0)
{
bReturn = true;
break;
}
}
return bReturn;
}
//*****************************************************************************
// ValidCaptureDevice
//*****************************************************************************
/*
bool ValidCaptureDevice(const char *szCaptureDeviceName)
{
// Microsoft changed the behaviour of Input devices on Windows Vista such that *each* input
// on each soundcard is reported as a separate device. Unfortunately, even though you can
// enumerate each input there are restrictions on what devices can be opened (e.g. you can only
// open the soundcard's default input). There is no API call to change the default input, so
// there is little point enumerating input devices that cannot be used, so we filter them out here.
WAVEFORMATEX wfex = { WAVE_FORMAT_PCM, 1, 22050, 44100, 2, 16, 0 }; // 16bit Mono 22050Hz
WAVEINCAPS WaveInCaps;
HWAVEIN hWaveIn;
bool bValid = false;
// Find the device ID from the device name
long lNumCaptureDevs = waveInGetNumDevs();
long lDeviceID = -1;
for (long lLoop = 0; lLoop < lNumCaptureDevs; lLoop++)
{
if (waveInGetDevCaps(lLoop, &WaveInCaps, sizeof(WAVEINCAPS)) == MMSYSERR_NOERROR)
{
if (!strcmp(szCaptureDeviceName, WaveInCaps.szPname))
{
lDeviceID = lLoop;
break;
}
}
}
if (lDeviceID != -1)
{
if (waveInOpen(&hWaveIn, lDeviceID, &wfex, NULL, NULL, WAVE_MAPPED) == MMSYSERR_NOERROR)
{
waveInClose(hWaveIn);
bValid = true;
}
}
return bValid;
}
*/
//*****************************************************************************
// GetDefaultPlaybackDeviceName
//*****************************************************************************
bool GetDefaultPlaybackDeviceName(char **pszName)
{
// Try to use DirectSound to get the name of the 'Preferred Audio Device / Endpoint"
// If that fails use MMSYSTEM (name will be limited to 32 characters in length)
TCHAR szPath[_MAX_PATH];
HINSTANCE hDSoundDLL;
if (!pszName)
return false;
*pszName = NULL;
// Load dsound.dll from the System Directory and use the DirectSoundEnumerateA function to
// get the list of playback devices
if (GetSystemDirectory(szPath, _MAX_PATH))
{
_tcscat(szPath, "\\dsound.dll");
hDSoundDLL = LoadLibrary(szPath);
if (hDSoundDLL)
{
LPDIRECTSOUNDENUMERATEA pfnDirectSoundEnumerateA = (LPDIRECTSOUNDENUMERATEA)GetProcAddress(hDSoundDLL, "DirectSoundEnumerateA");
if (pfnDirectSoundEnumerateA)
pfnDirectSoundEnumerateA(&DSEnumCallback, pszName);
FreeLibrary(hDSoundDLL);
}
}
// Falling back to MMSYSTEM
if (*pszName == NULL)
{
UINT uDeviceID=0;
DWORD dwFlags=1;
WAVEOUTCAPS outputInfo;
#if !defined(_WIN64)
#ifdef __GNUC__
__asm__ ("pusha;");
#else
__asm pusha; // workaround for register destruction caused by these wavOutMessage calls (weird but true)
#endif
#endif // !defined(_WIN64)
waveOutMessage((HWAVEOUT)(UINT_PTR)WAVE_MAPPER,0x2000+0x0015,(LPARAM)&uDeviceID,(WPARAM)&dwFlags);
waveOutGetDevCaps(uDeviceID,&outputInfo,sizeof(outputInfo));
#if !defined(_WIN64)
#ifdef __GNUC__
__asm__ ("popa;");
#else
__asm popa;
#endif
#endif // !defined(_WIN64)
*pszName = (char*)malloc((strlen(outputInfo.szPname) + 1) * sizeof(char));
if (*pszName)
strcpy(*pszName, outputInfo.szPname);
}
return (*pszName) ? true : false;
}
//*****************************************************************************
// GetDefaultCaptureDeviceName
//*****************************************************************************
bool GetDefaultCaptureDeviceName(char **pszName)
{
// Try to use DirectSound to get the name of the 'Preferred Audio Device / Endpoint" for recording.
// If that fails use MMSYSTEM (name will be limited to 32 characters in length)
TCHAR szPath[_MAX_PATH];
HINSTANCE hDSoundDLL;
if (!pszName)
return false;
*pszName = NULL;
// Load dsound.dll from the System Directory and use the DirectSoundCaptureEnumerateA function to
// get the list of capture devices
if (GetSystemDirectory(szPath, _MAX_PATH))
{
_tcscat(szPath, "\\dsound.dll");
hDSoundDLL = LoadLibrary(szPath);
if (hDSoundDLL)
{
LPDIRECTSOUNDCAPTUREENUMERATEA pfnDirectSoundCaptureEnumerateA = (LPDIRECTSOUNDCAPTUREENUMERATEA)GetProcAddress(hDSoundDLL, "DirectSoundCaptureEnumerateA");
if (pfnDirectSoundCaptureEnumerateA)
pfnDirectSoundCaptureEnumerateA(&DSEnumCallback, pszName);
FreeLibrary(hDSoundDLL);
}
}
// Falling back to MMSYSTEM
if (*pszName == NULL)
{
UINT uDeviceID=0;
DWORD dwFlags=1;
WAVEINCAPS inputInfo;
#if !defined(_WIN64)
#ifdef __GNUC__
__asm__ ("pusha;");
#else
__asm pusha; // workaround for register destruction caused by these wavOutMessage calls (weird but true)
#endif
#endif // !defined(_WIN64)
waveInMessage((HWAVEIN)(UINT_PTR)WAVE_MAPPER,0x2000+0x0015,(LPARAM)&uDeviceID,(WPARAM)&dwFlags);
waveInGetDevCaps(uDeviceID, &inputInfo, sizeof(inputInfo));
#if !defined(_WIN64)
#ifdef __GNUC__
__asm__ ("popa;");
#else
__asm popa;
#endif
#endif // !defined(_WIN64)
*pszName = (char*)malloc((strlen(inputInfo.szPname) + 1) * sizeof(char));
if (*pszName)
strcpy(*pszName, inputInfo.szPname);
}
return (*pszName) ? true : false;
}
//*****************************************************************************
// DSEnumCallback
//*****************************************************************************
BOOL CALLBACK DSEnumCallback(LPGUID lpGuid, LPCSTR lpcstrDescription, LPCSTR lpcstrModule, LPVOID lpContext)
{
// DirectSound Enumeration callback will be called for each device found.
// The first device returned with a non-NULL GUID is the 'preferred device'
// Skip over the device without a GUID
if (lpGuid)
{
char **pszName = (char**)lpContext;
*pszName = (char*)malloc((strlen(lpcstrDescription)+1) * sizeof(char));
if (*pszName)
{
strcpy(*pszName, lpcstrDescription);
return FALSE;
}
}
return TRUE;
}
//*****************************************************************************
// FindDevice
//*****************************************************************************
bool FindDevice(ALDEVICE *pDeviceList, char *szDeviceName, bool bExactMatch, char **ppszDefaultName)
{
// Search through pDeviceList for szDeviceName using an exact match if bExactMatch is true, or using
// a sub-string search otherwise.
// If found, allocate memory for *ppszDefaultName and copy the device name over
ALDEVICE *pDevice = NULL;
bool bFound = false;
if (!pDeviceList || !szDeviceName || !ppszDefaultName)
return false;
for (pDevice = pDeviceList; pDevice; pDevice = pDevice->pNextDevice)
{
if (bExactMatch)
bFound = (strcmp(pDevice->pszDeviceName, szDeviceName) == 0) ? true : false;
else
bFound = (strstr(pDevice->pszDeviceName, szDeviceName)) ? true : false;
if (bFound)
{
*ppszDefaultName = (char*)malloc((strlen(pDevice->pszDeviceName) + 1) * sizeof(char));
if (*ppszDefaultName)
{
strcpy(*ppszDefaultName, pDevice->pszDeviceName);
break;
}
}
}
return *ppszDefaultName ? true : false;
}
//*****************************************************************************
// LoadDevicesDLL
//*****************************************************************************
HINSTANCE LoadDevicesDLL(ALDEVICE *pDeviceList, const ALchar *szDeviceName)
{
// Search pDeviceList for szDeviceName, and when found load the OpenAL DLL
// that contains that Device name.
HINSTANCE hDLL = NULL;
ALDEVICE *pDevice;
for (pDevice = pDeviceList; pDevice; pDevice = pDevice->pNextDevice)
{
if (strcmp(pDevice->pszDeviceName, szDeviceName) == 0)
{
hDLL = LoadLibrary(pDevice->pszHostDLLFilename);
break;
}
}
return hDLL;
}
//*****************************************************************************
// FillOutAlcFunctions
//*****************************************************************************
ALboolean FillOutAlcFunctions(ALCdevice* device)
{
ALboolean alcFxns = FALSE;
ALCAPI_FXN_TABLE* alcApi = &device->AlcApi;
memset(alcApi, 0, sizeof(ALCAPI_FXN_TABLE));
//
// Get the OpenAL 1.0 Entry points.
//
alcApi->alcCreateContext = (ALCAPI_CREATE_CONTEXT)GetProcAddress(device->Dll, "alcCreateContext");
alcApi->alcMakeContextCurrent = (ALCAPI_MAKE_CONTEXT_CURRENT)GetProcAddress(device->Dll, "alcMakeContextCurrent");
alcApi->alcProcessContext = (ALCAPI_PROCESS_CONTEXT)GetProcAddress(device->Dll, "alcProcessContext");
alcApi->alcSuspendContext = (ALCAPI_SUSPEND_CONTEXT)GetProcAddress(device->Dll, "alcSuspendContext");
alcApi->alcDestroyContext = (ALCAPI_DESTROY_CONTEXT)GetProcAddress(device->Dll, "alcDestroyContext");
alcApi->alcGetCurrentContext = (ALCAPI_GET_CURRENT_CONTEXT)GetProcAddress(device->Dll, "alcGetCurrentContext");
alcApi->alcGetContextsDevice = (ALCAPI_GET_CONTEXTS_DEVICE)GetProcAddress(device->Dll, "alcGetContextsDevice");
alcApi->alcOpenDevice = (ALCAPI_OPEN_DEVICE)GetProcAddress(device->Dll, "alcOpenDevice");
alcApi->alcCloseDevice = (ALCAPI_CLOSE_DEVICE)GetProcAddress(device->Dll, "alcCloseDevice");
alcApi->alcGetError = (ALCAPI_GET_ERROR)GetProcAddress(device->Dll, "alcGetError");
alcApi->alcIsExtensionPresent = (ALCAPI_IS_EXTENSION_PRESENT)GetProcAddress(device->Dll, "alcIsExtensionPresent");
alcApi->alcGetProcAddress = (ALCAPI_GET_PROC_ADDRESS)GetProcAddress(device->Dll, "alcGetProcAddress");
alcApi->alcGetEnumValue = (ALCAPI_GET_ENUM_VALUE)GetProcAddress(device->Dll, "alcGetEnumValue");
alcApi->alcGetString = (ALCAPI_GET_STRING)GetProcAddress(device->Dll, "alcGetString");
alcApi->alcGetIntegerv = (ALCAPI_GET_INTEGERV)GetProcAddress(device->Dll, "alcGetIntegerv");
//
// Get the OpenAL 1.1 Entry points.
//
alcApi->alcCaptureOpenDevice = (ALCAPI_CAPTURE_OPEN_DEVICE)GetProcAddress(device->Dll, "alcCaptureOpenDevice");
alcApi->alcCaptureCloseDevice = (ALCAPI_CAPTURE_CLOSE_DEVICE)GetProcAddress(device->Dll, "alcCaptureCloseDevice");
alcApi->alcCaptureStart = (ALCAPI_CAPTURE_START)GetProcAddress(device->Dll, "alcCaptureStart");
alcApi->alcCaptureStop = (ALCAPI_CAPTURE_STOP)GetProcAddress(device->Dll, "alcCaptureStop");
alcApi->alcCaptureSamples = (ALCAPI_CAPTURE_SAMPLES)GetProcAddress(device->Dll, "alcCaptureSamples");
// handle legacy issue with old Creative DLLs which may not have alcGetProcAddress, alcIsExtensionPresent, alcGetEnumValue
if (alcApi->alcGetProcAddress == NULL) {
alcApi->alcGetProcAddress = (ALCAPI_GET_PROC_ADDRESS)alcGetProcAddress;
}
if (alcApi->alcIsExtensionPresent == NULL) {
alcApi->alcIsExtensionPresent = (ALCAPI_IS_EXTENSION_PRESENT)alcIsExtensionPresent;
}
if (alcApi->alcGetEnumValue == NULL) {
alcApi->alcGetEnumValue = (ALCAPI_GET_ENUM_VALUE)alcGetEnumValue;
}
alcFxns = (alcApi->alcCreateContext &&
alcApi->alcMakeContextCurrent &&
alcApi->alcProcessContext &&
alcApi->alcSuspendContext &&
alcApi->alcDestroyContext &&
alcApi->alcGetCurrentContext &&
alcApi->alcGetContextsDevice &&
alcApi->alcOpenDevice &&
alcApi->alcCloseDevice &&
alcApi->alcGetError &&
alcApi->alcIsExtensionPresent &&
alcApi->alcGetProcAddress &&
alcApi->alcGetEnumValue &&
alcApi->alcGetString &&
alcApi->alcGetIntegerv);
return alcFxns;
}
//*****************************************************************************
// FillOutAlFunctions
//*****************************************************************************
ALboolean FillOutAlFunctions(ALCcontext* context)
{
ALboolean alFxns = FALSE;
ALAPI_FXN_TABLE* alApi = &context->AlApi;
memset(alApi, 0, sizeof(ALAPI_FXN_TABLE));
//
// Get the OpenAL 1.0 & 1.1 Entry points.
//
alApi->alEnable = (ALAPI_ENABLE)GetProcAddress(context->Device->Dll, "alEnable");
alApi->alDisable = (ALAPI_DISABLE)GetProcAddress(context->Device->Dll, "alDisable");
alApi->alIsEnabled = (ALAPI_IS_ENABLED)GetProcAddress(context->Device->Dll, "alIsEnabled");
alApi->alGetString = (ALAPI_GET_STRING)GetProcAddress(context->Device->Dll, "alGetString");
alApi->alGetBooleanv = (ALAPI_GET_BOOLEANV)GetProcAddress(context->Device->Dll, "alGetBooleanv");
alApi->alGetIntegerv = (ALAPI_GET_INTEGERV)GetProcAddress(context->Device->Dll, "alGetIntegerv");
alApi->alGetFloatv = (ALAPI_GET_FLOATV)GetProcAddress(context->Device->Dll, "alGetFloatv");
alApi->alGetDoublev = (ALAPI_GET_DOUBLEV)GetProcAddress(context->Device->Dll, "alGetDoublev");
alApi->alGetBoolean = (ALAPI_GET_BOOLEAN)GetProcAddress(context->Device->Dll, "alGetBoolean");
alApi->alGetInteger = (ALAPI_GET_INTEGER)GetProcAddress(context->Device->Dll, "alGetInteger");
alApi->alGetFloat = (ALAPI_GET_FLOAT)GetProcAddress(context->Device->Dll, "alGetFloat");
alApi->alGetDouble = (ALAPI_GET_DOUBLE)GetProcAddress(context->Device->Dll, "alGetDouble");
alApi->alGetError = (ALAPI_GET_ERROR)GetProcAddress(context->Device->Dll, "alGetError");
alApi->alIsExtensionPresent = (ALAPI_IS_EXTENSION_PRESENT)GetProcAddress(context->Device->Dll, "alIsExtensionPresent");
alApi->alGetProcAddress = (ALAPI_GET_PROC_ADDRESS)GetProcAddress(context->Device->Dll, "alGetProcAddress");
alApi->alGetEnumValue = (ALAPI_GET_ENUM_VALUE)GetProcAddress(context->Device->Dll, "alGetEnumValue");
alApi->alListenerf = (ALAPI_LISTENERF)GetProcAddress(context->Device->Dll, "alListenerf");
alApi->alListener3f = (ALAPI_LISTENER3F)GetProcAddress(context->Device->Dll, "alListener3f");
alApi->alListenerfv = (ALAPI_LISTENERFV)GetProcAddress(context->Device->Dll, "alListenerfv");
alApi->alListeneri = (ALAPI_LISTENERI)GetProcAddress(context->Device->Dll, "alListeneri");
alApi->alListener3i = (ALAPI_LISTENER3I)GetProcAddress(context->Device->Dll, "alListener3i");
alApi->alListeneriv = (ALAPI_LISTENERIV)GetProcAddress(context->Device->Dll, "alListeneriv");
alApi->alGetListenerf = (ALAPI_GET_LISTENERF)GetProcAddress(context->Device->Dll, "alGetListenerf");
alApi->alGetListener3f = (ALAPI_GET_LISTENER3F)GetProcAddress(context->Device->Dll, "alGetListener3f");
alApi->alGetListenerfv = (ALAPI_GET_LISTENERFV)GetProcAddress(context->Device->Dll, "alGetListenerfv");
alApi->alGetListeneri = (ALAPI_GET_LISTENERI)GetProcAddress(context->Device->Dll, "alGetListeneri");
alApi->alGetListener3i = (ALAPI_GET_LISTENER3I)GetProcAddress(context->Device->Dll, "alGetListener3i");
alApi->alGetListeneriv = (ALAPI_GET_LISTENERIV)GetProcAddress(context->Device->Dll, "alGetListeneriv");
alApi->alGenSources = (ALAPI_GEN_SOURCES)GetProcAddress(context->Device->Dll, "alGenSources");
alApi->alDeleteSources = (ALAPI_DELETE_SOURCES)GetProcAddress(context->Device->Dll, "alDeleteSources");
alApi->alIsSource = (ALAPI_IS_SOURCE)GetProcAddress(context->Device->Dll, "alIsSource");
alApi->alSourcef = (ALAPI_SOURCEF)GetProcAddress(context->Device->Dll, "alSourcef");
alApi->alSource3f = (ALAPI_SOURCE3F)GetProcAddress(context->Device->Dll, "alSource3f");
alApi->alSourcefv = (ALAPI_SOURCEFV)GetProcAddress(context->Device->Dll, "alSourcefv");
alApi->alSourcei = (ALAPI_SOURCEI)GetProcAddress(context->Device->Dll, "alSourcei");
alApi->alSource3i = (ALAPI_SOURCE3I)GetProcAddress(context->Device->Dll, "alSource3i");
alApi->alSourceiv = (ALAPI_SOURCEIV)GetProcAddress(context->Device->Dll, "alSourceiv");
alApi->alGetSourcef = (ALAPI_GET_SOURCEF)GetProcAddress(context->Device->Dll, "alGetSourcef");
alApi->alGetSource3f = (ALAPI_GET_SOURCE3F)GetProcAddress(context->Device->Dll, "alGetSource3f");
alApi->alGetSourcefv = (ALAPI_GET_SOURCEFV)GetProcAddress(context->Device->Dll, "alGetSourcefv");
alApi->alGetSourcei = (ALAPI_GET_SOURCEI)GetProcAddress(context->Device->Dll, "alGetSourcei");
alApi->alGetSource3i = (ALAPI_GET_SOURCE3I)GetProcAddress(context->Device->Dll, "alGetSource3i");
alApi->alGetSourceiv = (ALAPI_GET_SOURCEIV)GetProcAddress(context->Device->Dll, "alGetSourceiv");
alApi->alSourcePlayv = (ALAPI_SOURCE_PLAYV)GetProcAddress(context->Device->Dll, "alSourcePlayv");
alApi->alSourceStopv = (ALAPI_SOURCE_STOPV)GetProcAddress(context->Device->Dll, "alSourceStopv");
alApi->alSourceRewindv = (ALAPI_SOURCE_REWINDV)GetProcAddress(context->Device->Dll, "alSourceRewindv");
alApi->alSourcePausev = (ALAPI_SOURCE_PAUSEV)GetProcAddress(context->Device->Dll, "alSourcePausev");
alApi->alSourcePlay = (ALAPI_SOURCE_PLAY)GetProcAddress(context->Device->Dll, "alSourcePlay");
alApi->alSourceStop = (ALAPI_SOURCE_STOP)GetProcAddress(context->Device->Dll, "alSourceStop");
alApi->alSourceRewind = (ALAPI_SOURCE_STOP)GetProcAddress(context->Device->Dll, "alSourceRewind");
alApi->alSourcePause = (ALAPI_SOURCE_PAUSE)GetProcAddress(context->Device->Dll, "alSourcePause");
alApi->alSourceQueueBuffers = (ALAPI_SOURCE_QUEUE_BUFFERS)GetProcAddress(context->Device->Dll, "alSourceQueueBuffers");
alApi->alSourceUnqueueBuffers = (ALAPI_SOURCE_UNQUEUE_BUFFERS)GetProcAddress(context->Device->Dll, "alSourceUnqueueBuffers");
alApi->alGenBuffers = (ALAPI_GEN_BUFFERS)GetProcAddress(context->Device->Dll, "alGenBuffers");
alApi->alDeleteBuffers = (ALAPI_DELETE_BUFFERS)GetProcAddress(context->Device->Dll, "alDeleteBuffers");
alApi->alIsBuffer = (ALAPI_IS_BUFFER)GetProcAddress(context->Device->Dll, "alIsBuffer");
alApi->alBufferData = (ALAPI_BUFFER_DATA)GetProcAddress(context->Device->Dll, "alBufferData");
alApi->alBufferf = (ALAPI_BUFFERF)GetProcAddress(context->Device->Dll, "alBufferf");
alApi->alBuffer3f = (ALAPI_BUFFER3F)GetProcAddress(context->Device->Dll, "alBuffer3f");
alApi->alBufferfv = (ALAPI_BUFFERFV)GetProcAddress(context->Device->Dll, "alBufferfv");
alApi->alBufferi = (ALAPI_BUFFERI)GetProcAddress(context->Device->Dll, "alBufferi");
alApi->alBuffer3i = (ALAPI_BUFFER3I)GetProcAddress(context->Device->Dll, "alBuffer3i");
alApi->alBufferiv = (ALAPI_BUFFERIV)GetProcAddress(context->Device->Dll, "alBufferiv");
alApi->alGetBufferf = (ALAPI_GET_BUFFERF)GetProcAddress(context->Device->Dll, "alGetBufferf");
alApi->alGetBuffer3f = (ALAPI_GET_BUFFER3F)GetProcAddress(context->Device->Dll, "alGetBuffer3f");
alApi->alGetBufferfv = (ALAPI_GET_BUFFERFV)GetProcAddress(context->Device->Dll, "alGetBufferfv");
alApi->alGetBufferi = (ALAPI_GET_BUFFERI)GetProcAddress(context->Device->Dll, "alGetBufferi");
alApi->alGetBuffer3i = (ALAPI_GET_BUFFER3I)GetProcAddress(context->Device->Dll, "alGetBuffer3i");
alApi->alGetBufferiv = (ALAPI_GET_BUFFERIV)GetProcAddress(context->Device->Dll, "alGetBufferiv");
alApi->alDopplerFactor = (ALAPI_DOPPLER_FACTOR)GetProcAddress(context->Device->Dll, "alDopplerFactor");
alApi->alDopplerVelocity = (ALAPI_DOPPLER_VELOCITY)GetProcAddress(context->Device->Dll, "alDopplerVelocity");
alApi->alSpeedOfSound = (ALAPI_SPEED_OF_SOUND)GetProcAddress(context->Device->Dll, "alSpeedOfSound");
alApi->alDistanceModel = (ALAPI_DISTANCE_MODEL)GetProcAddress(context->Device->Dll, "alDistanceModel");
alFxns = (alApi->alEnable &&
alApi->alDisable &&
alApi->alIsEnabled &&
alApi->alGetString &&
alApi->alGetBooleanv &&
alApi->alGetIntegerv &&
alApi->alGetFloatv &&
alApi->alGetDoublev &&
alApi->alGetBoolean &&
alApi->alGetInteger &&
alApi->alGetFloat &&
alApi->alGetDouble &&
alApi->alGetError &&
alApi->alIsExtensionPresent &&
alApi->alGetProcAddress &&
alApi->alGetEnumValue &&
alApi->alListenerf &&
alApi->alListener3f &&
alApi->alListenerfv &&
alApi->alListeneri &&
alApi->alGetListenerf &&
alApi->alGetListener3f &&
alApi->alGetListenerfv &&
alApi->alGetListeneri &&
alApi->alGenSources &&
alApi->alDeleteSources &&
alApi->alIsSource &&
alApi->alSourcef &&
alApi->alSource3f &&
alApi->alSourcefv &&
alApi->alSourcei &&
alApi->alGetSourcef &&
alApi->alGetSource3f &&
alApi->alGetSourcefv &&
alApi->alGetSourcei &&
alApi->alSourcePlayv &&
alApi->alSourceStopv &&
alApi->alSourceRewindv &&
alApi->alSourcePausev &&
alApi->alSourcePlay &&
alApi->alSourceStop &&
alApi->alSourceRewind &&
alApi->alSourcePause &&
alApi->alSourceQueueBuffers &&
alApi->alSourceUnqueueBuffers &&
alApi->alGenBuffers &&
alApi->alDeleteBuffers &&
alApi->alIsBuffer &&
alApi->alBufferData &&
alApi->alGetBufferf &&
alApi->alGetBufferi &&
alApi->alDopplerFactor &&
alApi->alDopplerVelocity &&
alApi->alDistanceModel);
return alFxns;
}
//*****************************************************************************
//*****************************************************************************
//
// ALC API Entry Points
//
//*****************************************************************************ALC_
//*****************************************************************************
//*****************************************************************************
// alcCloseDevice
//*****************************************************************************
//
ALCAPI ALCboolean ALCAPIENTRY alcCloseDevice(ALCdevice* device)
{
#ifdef _LOGCALLS
LOG("alcCloseDevice device %p\n", device);
#endif
if(!device)
{
return ALC_FALSE;
}
if (device == g_CaptureDevice)
return g_CaptureDevice->AlcApi.alcCloseDevice(g_CaptureDevice->CaptureDevice);
//
// Check if its linked to a context.
//
if(device->InUse)
{
ALCcontext* context = 0;
ALlistEntry* entry = 0;
//
// Not all of the contexts using the device have been destroyed.
//
assert(0);
//
// Loop through the context list and free and contexts linked to the device.
// Go back to the beginning each time in case some one changed the context
// list iterator.
//
alListAcquireLock(alContextList);
entry = alListIteratorReset(alContextList);
while(entry)
{
context = (ALCcontext*)alListGetData(entry);
if(context->Device == device)
{
alListReleaseLock(alContextList);
alcDestroyContext((ALCcontext *)context);
alListAcquireLock(alContextList);
entry = alListIteratorReset(alContextList);
}
else
{
entry = alListIteratorNext(alContextList);
}
}
alListReleaseLock(alContextList);
assert(!device->InUse);
}
device->AlcApi.alcCloseDevice(device->DllDevice);
FreeLibrary(device->Dll);
free(device);
return ALC_TRUE;
}
//*****************************************************************************
// alcCreateContext
//*****************************************************************************
ALCAPI ALCcontext* ALCAPIENTRY alcCreateContext(ALCdevice* device, const ALint* attrList)
{
#ifdef _LOGCALLS
LOG("alcCreateContext device %p ", device);
if (attrList)
{
unsigned long ulIndex = 0;
while ((ulIndex < 16) && (attrList[ulIndex]))
{
switch(attrList[ulIndex])
{
case ALC_FREQUENCY:
LOG("ALC_FREQUENCY %d ", attrList[ulIndex + 1]);
break;
case ALC_REFRESH:
LOG("ALC_REFRESH %d ", attrList[ulIndex + 1]);
break;
case ALC_SYNC:
LOG("ALC_SYNC %d ", attrList[ulIndex + 1]);
break;
case ALC_MONO_SOURCES:
LOG("ALC_MONO_SOURCES %d ", attrList[ulIndex + 1]);
break;
case ALC_STEREO_SOURCES:
LOG("ALC_STEREO_SOURCES %d ", attrList[ulIndex + 1]);
break;
case 0x20003/*ALC_MAX_AUXILIARY_SENDS*/:
LOG("ALC_MAX_AUXILIARY_SENDS %d", attrList[ulIndex + 1]);
break;
}
ulIndex += 2;
}
}
LOG("\n");
#endif
ALCcontext* context = 0;
if(!device)
{
LastError = ALC_INVALID_DEVICE;
return 0;
}
if (device == g_CaptureDevice)
return g_CaptureDevice->AlcApi.alcCreateContext(g_CaptureDevice->CaptureDevice, attrList);
//
// Allocate the context.
//
context = (ALCcontext*)malloc(sizeof(ALCcontext));
if(!context)
{
return 0;
}
memset(context, 0, sizeof(ALCcontext));
context->Device = device;
context->Suspended = FALSE;
context->LastError = ALC_NO_ERROR;
InitializeCriticalSection(&context->Lock);
//
// We don't fill out the AL functions in case they are context specific.
//
context->DllContext = device->AlcApi.alcCreateContext(device->DllDevice, attrList);
if(!context->DllContext)
{
DeleteCriticalSection(&context->Lock);
free(context);
context = 0;
return 0;
}
device->InUse++;
//
// Add it to the context list.
//
alListInitializeEntry(&context->ListEntry, context);
alListAcquireLock(alContextList);
alListAddEntry(alContextList, &context->ListEntry);
alListReleaseLock(alContextList);
return context;
}
//*****************************************************************************
// alcDestroyContext
//*****************************************************************************
ALCAPI ALvoid ALCAPIENTRY alcDestroyContext(ALCcontext* context)
{
#ifdef _LOGCALLS
LOG("alcDestroyContext context %p\n", context);
#endif
ALCcontext* listData = 0;
if(!context)
{
return;
}
//
// Remove the entry from the context list.
//
alListAcquireLock(alContextList);
listData = (ALCcontext*)alListRemoveEntry(alContextList, &context->ListEntry);
if(!listData)
{
alListReleaseLock(alContextList);
return;
}
if(context == alCurrentContext)
{
alCurrentContext = 0;
}
EnterCriticalSection(&context->Lock);
alListReleaseLock(alContextList);
context->Device->InUse--;
// Clean up the context.
if(context->DllContext)
{
context->Device->AlcApi.alcDestroyContext(context->DllContext);
}
LeaveCriticalSection(&context->Lock);
DeleteCriticalSection(&context->Lock);
free(context);
}
//*****************************************************************************
// alcGetContextsDevice
//*****************************************************************************
ALCAPI ALCdevice* ALCAPIENTRY alcGetContextsDevice(ALCcontext* context)
{
#ifdef _LOGCALLS
LOG("alcGetContextsDevice context %p\n", context);
#endif
ALCdevice* ALCdevice = 0;
alListAcquireLock(alContextList);
if(alListMatchData(alContextList, context))
{
ALCdevice = context->Device;
}
alListReleaseLock(alContextList);
return ALCdevice;
}
//*****************************************************************************
// alcGetCurrentContext
//*****************************************************************************
ALCAPI ALCcontext* ALCAPIENTRY alcGetCurrentContext(ALvoid)
{
#ifdef _LOGCALLS
LOG("alcGetCurrentContext\n");
#endif
return (ALCcontext *)alCurrentContext;
}
//*****************************************************************************
// alcGetEnumValue
//*****************************************************************************
ALCAPI ALenum ALCAPIENTRY alcGetEnumValue(ALCdevice* device, const ALCchar* ename)
{
#ifdef _LOGCALLS
LOG("alcGetEnumValue device %p enum name '%s'\n", device, ename ? ename : "<NULL>");
#endif
//
// Always return the router version of the ALC enum if it exists.
//
ALsizei i = 0;
while(alcEnums[i].ename && strcmp((char*)alcEnums[i].ename, (char*)ename))
{
i++;
}
if(alcEnums[i].ename)
{
return alcEnums[i].value;
}
if(device)
{
if (device == g_CaptureDevice)
return g_CaptureDevice->AlcApi.alcGetEnumValue(g_CaptureDevice->CaptureDevice, ename);
return device->AlcApi.alcGetEnumValue(device->DllDevice, ename);
}
LastError = ALC_INVALID_ENUM;
return 0;
}
//*****************************************************************************
// alcGetError
//*****************************************************************************
ALCAPI ALenum ALCAPIENTRY alcGetError(ALCdevice* device)
{
#ifdef _LOGCALLS
LOG("alcGetError device %p\n", device);
#endif
ALenum errorCode = ALC_NO_ERROR;
// Try to get a valid device.
if(!device)
{
if (g_CaptureDevice == device)
return
errorCode = LastError;
LastError = ALC_NO_ERROR;
return errorCode;
}
//
// Check if its a 3rd party device.
//
if (device == g_CaptureDevice)
errorCode = g_CaptureDevice->AlcApi.alcGetError(g_CaptureDevice->CaptureDevice);
else
errorCode = device->AlcApi.alcGetError(device->DllDevice);
return errorCode;
}
//*****************************************************************************
// alcGetIntegerv
//*****************************************************************************
ALCAPI ALvoid ALCAPIENTRY alcGetIntegerv(ALCdevice* device, ALenum param, ALsizei size, ALint* data)
{
#ifdef _LOGCALLS
LOG("alcGetIntegerv device %p enum ", device);
switch (param)
{
case ALC_ATTRIBUTES_SIZE:
LOG("ALC_ATTRIBUTES_SIZE\n");
break;
case ALC_ALL_ATTRIBUTES:
LOG("ALC_ALL_ATTRIBUTES\n");
break;
case ALC_MAJOR_VERSION:
LOG("ALC_MAJOR_VERSION\n");
break;
case ALC_MINOR_VERSION:
LOG("ALC_MINOR_VERSION\n");
break;
case ALC_CAPTURE_SAMPLES:
LOG("ALC_CAPTURE_SAMPLES\n");
break;
case ALC_FREQUENCY:
LOG("ALC_FREQUENCY\n");
break;
case ALC_REFRESH:
LOG("ALC_REFRESH\n");
break;
case ALC_SYNC:
LOG("ALC_SYNC\n");
break;
case ALC_MONO_SOURCES:
LOG("ALC_MONO_SOURCES\n");
break;
case ALC_STEREO_SOURCES:
LOG("ALC_STEREO_SOURCES\n");
break;
case 0x20003: // ALC_MAX_AUXILIARY_SENDS
LOG("ALC_MAX_AUXILIARY_SENDS\n");
break;
case 0x20001: // ALC_EFX_MAJOR_VERSION
LOG("ALC_EFX_MAJOR_VERSION\n");
break;
case 0x20002: // ALC_EFX_MINOR_VERSION
LOG("ALC_EFX_MINOR_VERSION\n");
break;
default:
LOG("<Unknown>\n");
break;
}
#endif
if(device)
{
if (device == g_CaptureDevice)
{
g_CaptureDevice->AlcApi.alcGetIntegerv(g_CaptureDevice->CaptureDevice, param, size, data);
return;
}
device->AlcApi.alcGetIntegerv(device->DllDevice, param, size, data);
return;
}
switch(param)
{
case ALC_MAJOR_VERSION:
{
if((size < sizeof(ALint)) || (data == 0))
{
LastError = ALC_INVALID;
return;
}
*data = alcMajorVersion;
}
break;
case ALC_MINOR_VERSION:
{
if((size < sizeof(ALint)) || (data == 0))
{
LastError = ALC_INVALID;
return;
}
*data = alcMinorVersion;
}
break;
default:
{
device->LastError = ALC_INVALID_ENUM;
}
break;
}
}
//*****************************************************************************
// alcGetProcAddress
//*****************************************************************************
ALCAPI ALvoid* ALCAPIENTRY alcGetProcAddress(ALCdevice* device, const ALCchar* fname)
{
#ifdef _LOGCALLS
LOG("alcGetProcAddress device %p function name '%s'\n", device, fname ? fname : "<NULL>");
#endif
//
// Always return the router version of the ALC function if it exists.
//
ALsizei i = 0;
while(alcFunctions[i].fname && strcmp((char*)alcFunctions[i].fname, (char*)fname))
{
i++;
}
if(alcFunctions[i].fname)
{
return alcFunctions[i].address;
}
if(device)
{
if (device == g_CaptureDevice)
return g_CaptureDevice->AlcApi.alcGetProcAddress(g_CaptureDevice->CaptureDevice, fname);
return device->AlcApi.alcGetProcAddress(device->DllDevice, fname);
}
LastError = ALC_INVALID_ENUM;
return 0;
}
//*****************************************************************************
// alcIsExtensionPresent
//*****************************************************************************
ALCAPI ALboolean ALCAPIENTRY alcIsExtensionPresent(ALCdevice* device, const ALCchar* ename)
{
#ifdef _LOGCALLS
LOG("alcIsExtensionPresent device %p extension name '%s'\n", device, ename ? ename : "<NULL>");
#endif
//
// Check if its a router supported extension first as its a good idea to have
// ALC calls go through the router if possible.
//
ALsizei i = 0;
while(alcExtensions[i].ename && _stricmp((char*)alcExtensions[i].ename, (char*)ename))
{
i++;
}
if(alcExtensions[i].ename)
{
return ALC_TRUE;
}
//
// Check the device passed in to see if the extension is supported.
//
if(device)
{
if (device == g_CaptureDevice)
return g_CaptureDevice->AlcApi.alcIsExtensionPresent(g_CaptureDevice->CaptureDevice, ename);
return device->AlcApi.alcIsExtensionPresent(device->DllDevice, ename);
}
LastError = ALC_INVALID_ENUM;
return ALC_FALSE;
}
//*****************************************************************************
// alcMakeContextCurrent
//*****************************************************************************
ALCAPI ALboolean ALCAPIENTRY alcMakeContextCurrent(ALCcontext* context)
{
#ifdef _LOGCALLS
LOG("alcMakeContextCurrent context %p\n", context);
#endif
ALboolean contextSwitched = AL_TRUE;
//
// Context must be a valid context or 0
//
alListAcquireLock(alContextList);
if(!alListMatchData(alContextList, context) && context != 0)
{
alListReleaseLock(alContextList);
return ALC_FALSE;
}
//
// Try the new context.
//
if(context)
{
contextSwitched = context->Device->AlcApi.alcMakeContextCurrent(context->DllContext);
//
// If this is the first time the context has been made the current context, fill in the context
// function pointers.
//
if(contextSwitched && !context->AlApi.alGetProcAddress)
{
//
// Don't fill out the functions here in case they are context specific pointers in the device.
//
if(!FillOutAlFunctions(context))
{
LastError = ALC_INVALID_CONTEXT;
contextSwitched = AL_FALSE;
//
// Something went wrong, restore the old context.
//
if(alCurrentContext)
{
alCurrentContext->Device->AlcApi.alcMakeContextCurrent(alCurrentContext->DllContext);
}
else
{
alCurrentContext->Device->AlcApi.alcMakeContextCurrent(0);
}
}
}
} else {
if ((alCurrentContext) && (alCurrentContext->Device) && (alCurrentContext->Device->AlcApi.alcMakeContextCurrent)) {
contextSwitched = alCurrentContext->Device->AlcApi.alcMakeContextCurrent(0);
}
}
//
// Set the context states if the switch was successful.
//
if(contextSwitched)
{
alCurrentContext = context;
}
alListReleaseLock(alContextList);
return contextSwitched;
}
//*****************************************************************************
// alcOpenDevice
//*****************************************************************************
ALCAPI ALCdevice* ALCAPIENTRY alcOpenDevice(const ALCchar* deviceName)
{
#ifdef _LOGCALLS
LOG("alcOpenDevice device name '%s'\n", deviceName ? deviceName : "<NULL>");
#endif
HINSTANCE dll = 0;
ALCdevice* device = 0;
const ALchar *pszDeviceName = NULL;
BuildDeviceList();
if (g_pDeviceList)
{
if ((!deviceName) || (strlen(deviceName)==0) || (strcmp(deviceName, "DirectSound3D")==0))
pszDeviceName = pszDefaultDeviceSpecifier;
else
pszDeviceName = deviceName;
// Search for device in Playback Device List
dll = LoadDevicesDLL(g_pDeviceList, pszDeviceName);
if (!dll)
{
// If NOT found, and the requested name is one of these ...
// "Generic Hardware" (no longer available on Windows Vista)
// "DirectSound" (legacy name for OpenAL Software mixer device)
// "MMSYSTEM" (legacy name for OpenAL Software mixer using MMSYSTEM instead of DirectSound)
// try to open the "Generic Software" device instead
if ((strcmp(pszDeviceName, "Generic Hardware") == 0) ||
(strcmp(pszDeviceName, "DirectSound") == 0) ||
(strcmp(pszDeviceName, "MMSYSTEM") == 0))
{
dll = LoadDevicesDLL(g_pDeviceList, "Generic Software");
}
}
if (!dll)
dll = LoadDevicesDLL(g_pAllDevicesList, pszDeviceName);
if (dll)
{
device = (ALCdevice*)malloc(sizeof(ALCdevice));
if (device)
{
memset(device, 0, sizeof(ALCdevice));
device->LastError = ALC_NO_ERROR;
device->InUse = 0;
device->Dll = dll;
if (FillOutAlcFunctions(device))
device->DllDevice = device->AlcApi.alcOpenDevice(pszDeviceName);
if (!device->DllDevice)
{
FreeLibrary(dll);
free(device);
device = 0;
}
}
}
}
if (!device)
LastError = ALC_INVALID_DEVICE;
return device;
}
//*****************************************************************************
// alcProcessContext
//*****************************************************************************
ALCAPI ALvoid ALCAPIENTRY alcProcessContext(ALCcontext* context)
{
#ifdef _LOGCALLS
LOG("alcProcessContext context %p\n", context);
#endif
alListAcquireLock(alContextList);
if(!context && !alCurrentContext)
{
alListReleaseLock(alContextList);
return;
}
if(!context)
{
context = alCurrentContext;
}
EnterCriticalSection(&context->Lock);
alListReleaseLock(alContextList);
if(context->DllContext)
{
context->Device->AlcApi.alcProcessContext(context->DllContext);
}
context->Suspended = FALSE;
LeaveCriticalSection(&context->Lock);
return;
}
//*****************************************************************************
// alcSuspendContext
//*****************************************************************************
ALCAPI ALCvoid ALCAPIENTRY alcSuspendContext(ALCcontext* context)
{
#ifdef _LOGCALLS
LOG("alcSuspendContext context %p\n", context);
#endif
alListAcquireLock(alContextList);
if(!context && !alCurrentContext)
{
alListReleaseLock(alContextList);
return;
}
if(!context)
{
context = (ALCcontext *)alCurrentContext;
}
EnterCriticalSection(&context->Lock);
alListReleaseLock(alContextList);
context->Suspended = TRUE;
if(context->DllContext)
{
context->Device->AlcApi.alcSuspendContext(context->DllContext);
}
LeaveCriticalSection(&context->Lock);
return;
}
//*****************************************************************************
// alcGetString
//*****************************************************************************
ALCAPI const ALCchar* ALCAPIENTRY alcGetString(ALCdevice* device, ALenum param)
{
#ifdef _LOGCALLS
LOG("alcGetString device %p enum ", device);
switch (param)
{
case ALC_NO_ERROR:
LOG("ALC_NO_ERROR\n");
break;
case ALC_INVALID_ENUM:
LOG("ALC_INVALID_ENUM\n");
break;
case ALC_INVALID_VALUE:
LOG("ALC_INVALID_VALUE\n");
break;
case ALC_INVALID_DEVICE:
LOG("ALC_INVALID_DEVICE\n");
break;
case ALC_INVALID_CONTEXT:
LOG("ALC_INVALID_CONTEXT\n");
break;
case ALC_DEFAULT_DEVICE_SPECIFIER:
LOG("ALC_DEFAULT_DEVICE_SPECIFIER\n");
break;
case ALC_DEVICE_SPECIFIER:
LOG("ALC_DEVICE_SPECIFIER\n");
break;
case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
LOG("ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER\n");
break;
case ALC_CAPTURE_DEVICE_SPECIFIER:
LOG("ALC_CAPTURE_DEVICE_SPECIFIER\n");
break;
case ALC_ALL_DEVICES_SPECIFIER:
LOG("ALC_ALL_DEVICES_SPECIFIER\n");
break;
case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
LOG("ALC_DEFAULT_ALL_DEVICES_SPECIFIER\n");
break;
case ALC_EXTENSIONS:
LOG("ALC_EXTENSIONS\n");
break;
default:
LOG("<Unknown>\n");
break;
}
#endif
const ALCchar* value = 0;
if ((param != ALC_DEFAULT_DEVICE_SPECIFIER) && (param != ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER)) {
if(device)
{
if (device == g_CaptureDevice)
return g_CaptureDevice->AlcApi.alcGetString(g_CaptureDevice->CaptureDevice, param);
return device->AlcApi.alcGetString(device->DllDevice, param);
}
}
switch(param)
{
case ALC_NO_ERROR:
{
value = alcNoError;
}
break;
case ALC_INVALID_ENUM:
{
value = alcErrInvalidEnum;
}
break;
case ALC_INVALID_VALUE:
{
value = alcErrInvalidValue;
}
break;
case ALC_INVALID_DEVICE:
{
value = alcErrInvalidDevice;
}
break;
case ALC_INVALID_CONTEXT:
{
value = alcErrInvalidContext;
}
break;
case ALC_DEFAULT_DEVICE_SPECIFIER:
BuildDeviceList();
if (pszDefaultDeviceSpecifier)
value = pszDefaultDeviceSpecifier;
else
value = szEmptyString;
break;
case ALC_DEVICE_SPECIFIER:
BuildDeviceList();
if (pszDeviceSpecifierList)
value = pszDeviceSpecifierList;
else
value = szEmptyString;
break;
case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
BuildDeviceList();
if (pszDefaultCaptureDeviceSpecifier)
value = pszDefaultCaptureDeviceSpecifier;
else
value = szEmptyString;
break;
case ALC_CAPTURE_DEVICE_SPECIFIER:
BuildDeviceList();
if (pszCaptureDeviceSpecifierList)
value = pszCaptureDeviceSpecifierList;
else
value = szEmptyString;
break;
case ALC_ALL_DEVICES_SPECIFIER:
BuildDeviceList();
if (pszAllDevicesSpecifierList)
value = pszAllDevicesSpecifierList;
else
value = szEmptyString;
break;
case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
BuildDeviceList();
if (pszDefaultAllDevicesSpecifier)
value = pszDefaultAllDevicesSpecifier;
else
value = szEmptyString;
break;
default:
LastError = ALC_INVALID_ENUM;
break;
}
return value;
}
//*****************************************************************************
// alcCaptureOpenDevice
//*****************************************************************************
ALCAPI ALCdevice * ALCAPIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei buffersize)
{
#ifdef _LOGCALLS
LOG("alcCaptureOpenDevice device name '%s' frequency %d format %d buffersize %d\n", deviceName ? deviceName : "<NULL>", frequency, format, buffersize);
#endif
const ALchar *pszDeviceName = NULL;
BuildDeviceList();
if (!g_pCaptureDeviceList)
return NULL;
if (!g_CaptureDevice) {
g_CaptureDevice = (ALCdevice*)malloc(sizeof(ALCdevice));
if (g_CaptureDevice)
{
// clear
memset(g_CaptureDevice, 0, sizeof(ALCdevice));
// make sure we have a device name
if ((!deviceName) || (strlen(deviceName) == 0))
pszDeviceName = pszDefaultCaptureDeviceSpecifier;
else
pszDeviceName = deviceName;
g_CaptureDevice->Dll = LoadDevicesDLL(g_pCaptureDeviceList, pszDeviceName);
if (g_CaptureDevice->Dll) {
if(FillOutAlcFunctions(g_CaptureDevice)) {
if (g_CaptureDevice->AlcApi.alcCaptureOpenDevice) {
g_CaptureDevice->CaptureDevice = g_CaptureDevice->AlcApi.alcCaptureOpenDevice(pszDeviceName, frequency, format, buffersize);
g_CaptureDevice->LastError = ALC_NO_ERROR;
g_CaptureDevice->InUse = 0;
} else {
g_CaptureDevice->LastError = ALC_INVALID_DEVICE;
}
}
}
}
} else {
// already open
g_CaptureDevice->LastError = ALC_INVALID_VALUE;
}
if (g_CaptureDevice != NULL) {
if (g_CaptureDevice->CaptureDevice) {
return g_CaptureDevice;
} else {
free(g_CaptureDevice);
g_CaptureDevice = NULL;
return NULL;
}
} else {
return NULL;
}
}
//*****************************************************************************
// alcCaptureCloseDevice
//*****************************************************************************
ALCAPI ALCboolean ALCAPIENTRY alcCaptureCloseDevice(ALCdevice *device)
{
#ifdef _LOGCALLS
LOG("alcCaptureCloseDevice device %p\n", device);
#endif
ALCboolean bReturn = ALC_FALSE;
if (device == g_CaptureDevice)
{
if (g_CaptureDevice != NULL) {
if (g_CaptureDevice->AlcApi.alcCaptureCloseDevice) {
bReturn = g_CaptureDevice->AlcApi.alcCaptureCloseDevice(g_CaptureDevice->CaptureDevice);
delete g_CaptureDevice;
g_CaptureDevice = NULL;
} else {
g_CaptureDevice->LastError = ALC_INVALID_DEVICE;
}
}
}
return bReturn;
}
//*****************************************************************************
// alcCaptureStart
//*****************************************************************************
ALCAPI ALCvoid ALCAPIENTRY alcCaptureStart(ALCdevice *device)
{
#ifdef _LOGCALLS
LOG("alcCaptureStart device %p\n", device);
#endif
if (device == g_CaptureDevice)
{
if (g_CaptureDevice != NULL) {
if (g_CaptureDevice->AlcApi.alcCaptureStart) {
g_CaptureDevice->AlcApi.alcCaptureStart(g_CaptureDevice->CaptureDevice);
} else {
g_CaptureDevice->LastError = ALC_INVALID_DEVICE;
}
}
}
return;
}
//*****************************************************************************
// alcCaptureStop
//*****************************************************************************
ALCAPI ALCvoid ALCAPIENTRY alcCaptureStop(ALCdevice *device)
{
#ifdef _LOGCALLS
LOG("alcCaptureStop device %p\n", device);
#endif
if (device == g_CaptureDevice)
{
if (g_CaptureDevice != NULL) {
if (g_CaptureDevice->AlcApi.alcCaptureStop) {
g_CaptureDevice->AlcApi.alcCaptureStop(g_CaptureDevice->CaptureDevice);
} else {
g_CaptureDevice->LastError = ALC_INVALID_DEVICE;
}
}
}
return;
}
//*****************************************************************************
// alcCaptureSamples
//*****************************************************************************
ALCAPI ALCvoid ALCAPIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
{
#ifdef _LOGCALLS
LOG("alcCaptureSamples device %p buffer %p samples %d\n", device, buffer, samples);
#endif
if (device == g_CaptureDevice)
{
if (g_CaptureDevice != NULL) {
if (g_CaptureDevice->AlcApi.alcCaptureSamples) {
g_CaptureDevice->AlcApi.alcCaptureSamples(g_CaptureDevice->CaptureDevice, buffer, samples);
} else {
g_CaptureDevice->LastError = ALC_INVALID_DEVICE;
}
}
}
return;
}
#ifdef _LOGCALLS
void OutputMessage(const char *szDebug,...)
{
static FILE *pFile = NULL;
SYSTEMTIME sysTime;
va_list args;
va_start(args, szDebug);
if (!pFile)
{
pFile = fopen(LOGFILENAME, "w");
GetLocalTime(&sysTime);
fprintf(pFile, "OpenAL Router\n\nLog Time : %d/%d/%d at %d:%s%d:%s%d\n\n", sysTime.wDay, sysTime.wMonth, sysTime.wYear,
sysTime.wHour, (sysTime.wMinute < 10) ? "0" : "", sysTime.wMinute, (sysTime.wSecond < 10) ? "0" : "", sysTime.wSecond);
}
vfprintf(pFile, szDebug, args);
fflush(pFile);
va_end(args);
}
#endif
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