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Diffstat (limited to 'src/audio/oal/aldlist.cpp')
| -rw-r--r-- | src/audio/oal/aldlist.cpp | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/src/audio/oal/aldlist.cpp b/src/audio/oal/aldlist.cpp new file mode 100644 index 00000000..2c2f13a8 --- /dev/null +++ b/src/audio/oal/aldlist.cpp @@ -0,0 +1,329 @@ +/* + * Copyright (c) 2006, Creative Labs Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are permitted provided + * that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this list of conditions and + * the following disclaimer. + * * 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. + * * Neither the name of Creative Labs Inc. nor the names of its contributors may be used to endorse or + * promote products derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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 "aldlist.h" +#ifdef AUDIO_OAL +/* + * Init call + */ +ALDeviceList::ALDeviceList() +{ + ALDEVICEINFO ALDeviceInfo; + char *devices; + int index; + const char *defaultDeviceName; + const char *actualDeviceName; + + // DeviceInfo vector stores, for each enumerated device, it's device name, selection status, spec version #, and extension support + vDeviceInfo.empty(); + vDeviceInfo.reserve(10); + + defaultDeviceIndex = 0; + + if (alcIsExtensionPresent(NULL, "ALC_ENUMERATION_EXT")) { + devices = (char *)alcGetString(NULL, ALC_DEVICE_SPECIFIER); + defaultDeviceName = (char *)alcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER); + + index = 0; + // go through device list (each device terminated with a single NULL, list terminated with double NULL) + while (*devices != NULL) { + if (strcmp(defaultDeviceName, devices) == 0) { + defaultDeviceIndex = index; + } + ALCdevice *device = alcOpenDevice(devices); + if (device) { + ALCcontext *context = alcCreateContext(device, NULL); + if (context) { + alcMakeContextCurrent(context); + // if new actual device name isn't already in the list, then add it... + actualDeviceName = alcGetString(device, ALC_DEVICE_SPECIFIER); + bool bNewName = true; + for (int i = 0; i < GetNumDevices(); i++) { + if (strcmp(GetDeviceName(i), actualDeviceName) == 0) { + bNewName = false; + } + } + if ((bNewName) && (actualDeviceName != NULL) && (strlen(actualDeviceName) > 0)) { + memset(&ALDeviceInfo, 0, sizeof(ALDEVICEINFO)); + ALDeviceInfo.bSelected = true; + ALDeviceInfo.strDeviceName = std::string(actualDeviceName, strlen(actualDeviceName)); + alcGetIntegerv(device, ALC_MAJOR_VERSION, sizeof(int), &ALDeviceInfo.iMajorVersion); + alcGetIntegerv(device, ALC_MINOR_VERSION, sizeof(int), &ALDeviceInfo.iMinorVersion); + + ALDeviceInfo.pvstrExtensions = new std::vector<std::string>; + + // Check for ALC Extensions + if (alcIsExtensionPresent(device, "ALC_EXT_CAPTURE") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("ALC_EXT_CAPTURE"); + if (alcIsExtensionPresent(device, "ALC_EXT_EFX") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("ALC_EXT_EFX"); + + // Check for AL Extensions + if (alIsExtensionPresent("AL_EXT_OFFSET") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("AL_EXT_OFFSET"); + + if (alIsExtensionPresent("AL_EXT_LINEAR_DISTANCE") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("AL_EXT_LINEAR_DISTANCE"); + if (alIsExtensionPresent("AL_EXT_EXPONENT_DISTANCE") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("AL_EXT_EXPONENT_DISTANCE"); + + if (alIsExtensionPresent("EAX2.0") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("EAX2.0"); + if (alIsExtensionPresent("EAX3.0") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("EAX3.0"); + if (alIsExtensionPresent("EAX4.0") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("EAX4.0"); + if (alIsExtensionPresent("EAX5.0") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("EAX5.0"); + + if (alIsExtensionPresent("EAX-RAM") == AL_TRUE) + ALDeviceInfo.pvstrExtensions->push_back("EAX-RAM"); + + // Get Source Count + ALDeviceInfo.uiSourceCount = GetMaxNumSources(); + + vDeviceInfo.push_back(ALDeviceInfo); + } + alcMakeContextCurrent(NULL); + alcDestroyContext(context); + } + alcCloseDevice(device); + } + devices += strlen(devices) + 1; + index += 1; + } + } + + ResetFilters(); +} + +/* + * Exit call + */ +ALDeviceList::~ALDeviceList() +{ + for (unsigned int i = 0; i < vDeviceInfo.size(); i++) { + if (vDeviceInfo[i].pvstrExtensions) { + vDeviceInfo[i].pvstrExtensions->empty(); + delete vDeviceInfo[i].pvstrExtensions; + } + } + + vDeviceInfo.empty(); +} + +/* + * Returns the number of devices in the complete device list + */ +int ALDeviceList::GetNumDevices() +{ + return (int)vDeviceInfo.size(); +} + +/* + * Returns the device name at an index in the complete device list + */ +char * ALDeviceList::GetDeviceName(int index) +{ + if (index < GetNumDevices()) + return (char *)vDeviceInfo[index].strDeviceName.c_str(); + else + return NULL; +} + +/* + * Returns the major and minor version numbers for a device at a specified index in the complete list + */ +void ALDeviceList::GetDeviceVersion(int index, int *major, int *minor) +{ + if (index < GetNumDevices()) { + if (major) + *major = vDeviceInfo[index].iMajorVersion; + if (minor) + *minor = vDeviceInfo[index].iMinorVersion; + } + return; +} + +/* + * Returns the maximum number of Sources that can be generate on the given device + */ +unsigned int ALDeviceList::GetMaxNumSources(int index) +{ + if (index < GetNumDevices()) + return vDeviceInfo[index].uiSourceCount; + else + return 0; +} + +/* + * Checks if the extension is supported on the given device + */ +bool ALDeviceList::IsExtensionSupported(int index, char *szExtName) +{ + bool bReturn = false; + + if (index < GetNumDevices()) { + for (unsigned int i = 0; i < vDeviceInfo[index].pvstrExtensions->size(); i++) { + if (!_stricmp(vDeviceInfo[index].pvstrExtensions->at(i).c_str(), szExtName)) { + bReturn = true; + break; + } + } + } + + return bReturn; +} + +/* + * returns the index of the default device in the complete device list + */ +int ALDeviceList::GetDefaultDevice() +{ + return defaultDeviceIndex; +} + +/* + * Deselects devices which don't have the specified minimum version + */ +void ALDeviceList::FilterDevicesMinVer(int major, int minor) +{ + int dMajor, dMinor; + for (unsigned int i = 0; i < vDeviceInfo.size(); i++) { + GetDeviceVersion(i, &dMajor, &dMinor); + if ((dMajor < major) || ((dMajor == major) && (dMinor < minor))) { + vDeviceInfo[i].bSelected = false; + } + } +} + +/* + * Deselects devices which don't have the specified maximum version + */ +void ALDeviceList::FilterDevicesMaxVer(int major, int minor) +{ + int dMajor, dMinor; + for (unsigned int i = 0; i < vDeviceInfo.size(); i++) { + GetDeviceVersion(i, &dMajor, &dMinor); + if ((dMajor > major) || ((dMajor == major) && (dMinor > minor))) { + vDeviceInfo[i].bSelected = false; + } + } +} + +/* + * Deselects device which don't support the given extension name + */ +void ALDeviceList::FilterDevicesExtension(char *szExtName) +{ + bool bFound; + + for (unsigned int i = 0; i < vDeviceInfo.size(); i++) { + bFound = false; + for (unsigned int j = 0; j < vDeviceInfo[i].pvstrExtensions->size(); j++) { + if (!_stricmp(vDeviceInfo[i].pvstrExtensions->at(j).c_str(), szExtName)) { + bFound = true; + break; + } + } + if (!bFound) + vDeviceInfo[i].bSelected = false; + } +} + +/* + * Resets all filtering, such that all devices are in the list + */ +void ALDeviceList::ResetFilters() +{ + for (int i = 0; i < GetNumDevices(); i++) { + vDeviceInfo[i].bSelected = true; + } + filterIndex = 0; +} + +/* + * Gets index of first filtered device + */ +int ALDeviceList::GetFirstFilteredDevice() +{ + int i; + + for (i = 0; i < GetNumDevices(); i++) { + if (vDeviceInfo[i].bSelected == true) { + break; + } + } + filterIndex = i + 1; + return i; +} + +/* + * Gets index of next filtered device + */ +int ALDeviceList::GetNextFilteredDevice() +{ + int i; + + for (i = filterIndex; i < GetNumDevices(); i++) { + if (vDeviceInfo[i].bSelected == true) { + break; + } + } + filterIndex = i + 1; + return i; +} + +/* + * Internal function to detemine max number of Sources that can be generated + */ +unsigned int ALDeviceList::GetMaxNumSources() +{ + ALuint uiSources[256]; + unsigned int iSourceCount = 0; + + // Clear AL Error Code + alGetError(); + + // Generate up to 256 Sources, checking for any errors + for (iSourceCount = 0; iSourceCount < 256; iSourceCount++) + { + alGenSources(1, &uiSources[iSourceCount]); + if (alGetError() != AL_NO_ERROR) + break; + } + + // Release the Sources + alDeleteSources(iSourceCount, uiSources); + if (alGetError() != AL_NO_ERROR) + { + for (unsigned int i = 0; i < 256; i++) + { + alDeleteSources(1, &uiSources[i]); + } + } + + return iSourceCount; +} +#endif
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