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authoraap <aap@papnet.eu>2020-05-11 22:21:26 +0200
committeraap <aap@papnet.eu>2020-05-11 22:21:26 +0200
commit0eb5f93e96bfc4b31c0bde01e9f1296b3b612bc2 (patch)
tree16bf11e0e8a0353448a643322e9511e8ba659fca /src/audio/oal/aldlist.cpp
parentCVisibilityPlugins (diff)
parentMerge remote-tracking branch 'origin/master' into miami (diff)
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Diffstat (limited to 'src/audio/oal/aldlist.cpp')
-rw-r--r--src/audio/oal/aldlist.cpp329
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diff --git a/src/audio/oal/aldlist.cpp b/src/audio/oal/aldlist.cpp
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+++ b/src/audio/oal/aldlist.cpp
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+/*
+ * 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 \ No newline at end of file