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#include "config.h"
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <mutex>
#include <algorithm>
#include <array>
#include "AL/alc.h"
#include "alstring.h"
#include "router.h"
#define DECL(x) { #x, reinterpret_cast<void*>(x) }
struct FuncExportEntry {
const char *funcName;
void *address;
};
static const std::array<FuncExportEntry,128> alcFunctions{{
DECL(alcCreateContext),
DECL(alcMakeContextCurrent),
DECL(alcProcessContext),
DECL(alcSuspendContext),
DECL(alcDestroyContext),
DECL(alcGetCurrentContext),
DECL(alcGetContextsDevice),
DECL(alcOpenDevice),
DECL(alcCloseDevice),
DECL(alcGetError),
DECL(alcIsExtensionPresent),
DECL(alcGetProcAddress),
DECL(alcGetEnumValue),
DECL(alcGetString),
DECL(alcGetIntegerv),
DECL(alcCaptureOpenDevice),
DECL(alcCaptureCloseDevice),
DECL(alcCaptureStart),
DECL(alcCaptureStop),
DECL(alcCaptureSamples),
DECL(alcSetThreadContext),
DECL(alcGetThreadContext),
DECL(alEnable),
DECL(alDisable),
DECL(alIsEnabled),
DECL(alGetString),
DECL(alGetBooleanv),
DECL(alGetIntegerv),
DECL(alGetFloatv),
DECL(alGetDoublev),
DECL(alGetBoolean),
DECL(alGetInteger),
DECL(alGetFloat),
DECL(alGetDouble),
DECL(alGetError),
DECL(alIsExtensionPresent),
DECL(alGetProcAddress),
DECL(alGetEnumValue),
DECL(alListenerf),
DECL(alListener3f),
DECL(alListenerfv),
DECL(alListeneri),
DECL(alListener3i),
DECL(alListeneriv),
DECL(alGetListenerf),
DECL(alGetListener3f),
DECL(alGetListenerfv),
DECL(alGetListeneri),
DECL(alGetListener3i),
DECL(alGetListeneriv),
DECL(alGenSources),
DECL(alDeleteSources),
DECL(alIsSource),
DECL(alSourcef),
DECL(alSource3f),
DECL(alSourcefv),
DECL(alSourcei),
DECL(alSource3i),
DECL(alSourceiv),
DECL(alGetSourcef),
DECL(alGetSource3f),
DECL(alGetSourcefv),
DECL(alGetSourcei),
DECL(alGetSource3i),
DECL(alGetSourceiv),
DECL(alSourcePlayv),
DECL(alSourceStopv),
DECL(alSourceRewindv),
DECL(alSourcePausev),
DECL(alSourcePlay),
DECL(alSourceStop),
DECL(alSourceRewind),
DECL(alSourcePause),
DECL(alSourceQueueBuffers),
DECL(alSourceUnqueueBuffers),
DECL(alGenBuffers),
DECL(alDeleteBuffers),
DECL(alIsBuffer),
DECL(alBufferData),
DECL(alBufferf),
DECL(alBuffer3f),
DECL(alBufferfv),
DECL(alBufferi),
DECL(alBuffer3i),
DECL(alBufferiv),
DECL(alGetBufferf),
DECL(alGetBuffer3f),
DECL(alGetBufferfv),
DECL(alGetBufferi),
DECL(alGetBuffer3i),
DECL(alGetBufferiv),
DECL(alDopplerFactor),
DECL(alDopplerVelocity),
DECL(alSpeedOfSound),
DECL(alDistanceModel),
/* EFX 1.0 */
DECL(alGenFilters),
DECL(alDeleteFilters),
DECL(alIsFilter),
DECL(alFilterf),
DECL(alFilterfv),
DECL(alFilteri),
DECL(alFilteriv),
DECL(alGetFilterf),
DECL(alGetFilterfv),
DECL(alGetFilteri),
DECL(alGetFilteriv),
DECL(alGenEffects),
DECL(alDeleteEffects),
DECL(alIsEffect),
DECL(alEffectf),
DECL(alEffectfv),
DECL(alEffecti),
DECL(alEffectiv),
DECL(alGetEffectf),
DECL(alGetEffectfv),
DECL(alGetEffecti),
DECL(alGetEffectiv),
DECL(alGenAuxiliaryEffectSlots),
DECL(alDeleteAuxiliaryEffectSlots),
DECL(alIsAuxiliaryEffectSlot),
DECL(alAuxiliaryEffectSlotf),
DECL(alAuxiliaryEffectSlotfv),
DECL(alAuxiliaryEffectSloti),
DECL(alAuxiliaryEffectSlotiv),
DECL(alGetAuxiliaryEffectSlotf),
DECL(alGetAuxiliaryEffectSlotfv),
DECL(alGetAuxiliaryEffectSloti),
DECL(alGetAuxiliaryEffectSlotiv),
}};
#undef DECL
#define DECL(x) { #x, (x) }
struct EnumExportEntry {
const ALCchar *enumName;
ALCenum value;
};
static const std::array<EnumExportEntry,92> alcEnumerations{{
DECL(ALC_INVALID),
DECL(ALC_FALSE),
DECL(ALC_TRUE),
DECL(ALC_MAJOR_VERSION),
DECL(ALC_MINOR_VERSION),
DECL(ALC_ATTRIBUTES_SIZE),
DECL(ALC_ALL_ATTRIBUTES),
DECL(ALC_DEFAULT_DEVICE_SPECIFIER),
DECL(ALC_DEVICE_SPECIFIER),
DECL(ALC_ALL_DEVICES_SPECIFIER),
DECL(ALC_DEFAULT_ALL_DEVICES_SPECIFIER),
DECL(ALC_EXTENSIONS),
DECL(ALC_FREQUENCY),
DECL(ALC_REFRESH),
DECL(ALC_SYNC),
DECL(ALC_MONO_SOURCES),
DECL(ALC_STEREO_SOURCES),
DECL(ALC_CAPTURE_DEVICE_SPECIFIER),
DECL(ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER),
DECL(ALC_CAPTURE_SAMPLES),
DECL(ALC_NO_ERROR),
DECL(ALC_INVALID_DEVICE),
DECL(ALC_INVALID_CONTEXT),
DECL(ALC_INVALID_ENUM),
DECL(ALC_INVALID_VALUE),
DECL(ALC_OUT_OF_MEMORY),
DECL(AL_INVALID),
DECL(AL_NONE),
DECL(AL_FALSE),
DECL(AL_TRUE),
DECL(AL_SOURCE_RELATIVE),
DECL(AL_CONE_INNER_ANGLE),
DECL(AL_CONE_OUTER_ANGLE),
DECL(AL_PITCH),
DECL(AL_POSITION),
DECL(AL_DIRECTION),
DECL(AL_VELOCITY),
DECL(AL_LOOPING),
DECL(AL_BUFFER),
DECL(AL_GAIN),
DECL(AL_MIN_GAIN),
DECL(AL_MAX_GAIN),
DECL(AL_ORIENTATION),
DECL(AL_REFERENCE_DISTANCE),
DECL(AL_ROLLOFF_FACTOR),
DECL(AL_CONE_OUTER_GAIN),
DECL(AL_MAX_DISTANCE),
DECL(AL_SEC_OFFSET),
DECL(AL_SAMPLE_OFFSET),
DECL(AL_BYTE_OFFSET),
DECL(AL_SOURCE_TYPE),
DECL(AL_STATIC),
DECL(AL_STREAMING),
DECL(AL_UNDETERMINED),
DECL(AL_SOURCE_STATE),
DECL(AL_INITIAL),
DECL(AL_PLAYING),
DECL(AL_PAUSED),
DECL(AL_STOPPED),
DECL(AL_BUFFERS_QUEUED),
DECL(AL_BUFFERS_PROCESSED),
DECL(AL_FORMAT_MONO8),
DECL(AL_FORMAT_MONO16),
DECL(AL_FORMAT_STEREO8),
DECL(AL_FORMAT_STEREO16),
DECL(AL_FREQUENCY),
DECL(AL_BITS),
DECL(AL_CHANNELS),
DECL(AL_SIZE),
DECL(AL_UNUSED),
DECL(AL_PENDING),
DECL(AL_PROCESSED),
DECL(AL_NO_ERROR),
DECL(AL_INVALID_NAME),
DECL(AL_INVALID_ENUM),
DECL(AL_INVALID_VALUE),
DECL(AL_INVALID_OPERATION),
DECL(AL_OUT_OF_MEMORY),
DECL(AL_VENDOR),
DECL(AL_VERSION),
DECL(AL_RENDERER),
DECL(AL_EXTENSIONS),
DECL(AL_DOPPLER_FACTOR),
DECL(AL_DOPPLER_VELOCITY),
DECL(AL_DISTANCE_MODEL),
DECL(AL_SPEED_OF_SOUND),
DECL(AL_INVERSE_DISTANCE),
DECL(AL_INVERSE_DISTANCE_CLAMPED),
DECL(AL_LINEAR_DISTANCE),
DECL(AL_LINEAR_DISTANCE_CLAMPED),
DECL(AL_EXPONENT_DISTANCE),
DECL(AL_EXPONENT_DISTANCE_CLAMPED),
}};
#undef DECL
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 const ALCchar alcErrOutOfMemory[] = "Out of Memory";
static const ALCchar alcExtensionList[] =
"ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
"ALC_EXT_thread_local_context";
static const ALCint alcMajorVersion = 1;
static const ALCint alcMinorVersion = 1;
static std::recursive_mutex EnumerationLock;
static std::mutex ContextSwitchLock;
static std::atomic<ALCenum> LastError{ALC_NO_ERROR};
static PtrIntMap DeviceIfaceMap;
static PtrIntMap ContextIfaceMap;
typedef struct EnumeratedList {
std::vector<ALCchar> Names;
std::vector<ALCint> Indicies;
void clear()
{
Names.clear();
Indicies.clear();
}
} EnumeratedList;
static EnumeratedList DevicesList;
static EnumeratedList AllDevicesList;
static EnumeratedList CaptureDevicesList;
static void AppendDeviceList(EnumeratedList *list, const ALCchar *names, ALint idx)
{
const ALCchar *name_end = names;
if(!name_end) return;
ALCsizei count = 0;
while(*name_end)
{
TRACE("Enumerated \"%s\", driver %d\n", name_end, idx);
++count;
name_end += strlen(name_end)+1;
}
if(names == name_end)
return;
list->Names.reserve(list->Names.size() + (name_end - names) + 1);
list->Names.insert(list->Names.cend(), names, name_end);
list->Indicies.reserve(list->Indicies.size() + count);
list->Indicies.insert(list->Indicies.cend(), count, idx);
}
static ALint GetDriverIndexForName(const EnumeratedList *list, const ALCchar *name)
{
const ALCchar *devnames = list->Names.data();
const ALCint *index = list->Indicies.data();
while(devnames && *devnames)
{
if(strcmp(name, devnames) == 0)
return *index;
devnames += strlen(devnames)+1;
index++;
}
return -1;
}
static void InitCtxFuncs(DriverIface &iface)
{
ALCdevice *device{iface.alcGetContextsDevice(iface.alcGetCurrentContext())};
#define LOAD_PROC(x) do { \
iface.x = reinterpret_cast<decltype(iface.x)>(iface.alGetProcAddress(#x));\
if(!iface.x) \
ERR("Failed to find entry point for %s in %ls\n", #x, \
iface.Name.c_str()); \
} while(0)
if(iface.alcIsExtensionPresent(device, "ALC_EXT_EFX"))
{
LOAD_PROC(alGenFilters);
LOAD_PROC(alDeleteFilters);
LOAD_PROC(alIsFilter);
LOAD_PROC(alFilterf);
LOAD_PROC(alFilterfv);
LOAD_PROC(alFilteri);
LOAD_PROC(alFilteriv);
LOAD_PROC(alGetFilterf);
LOAD_PROC(alGetFilterfv);
LOAD_PROC(alGetFilteri);
LOAD_PROC(alGetFilteriv);
LOAD_PROC(alGenEffects);
LOAD_PROC(alDeleteEffects);
LOAD_PROC(alIsEffect);
LOAD_PROC(alEffectf);
LOAD_PROC(alEffectfv);
LOAD_PROC(alEffecti);
LOAD_PROC(alEffectiv);
LOAD_PROC(alGetEffectf);
LOAD_PROC(alGetEffectfv);
LOAD_PROC(alGetEffecti);
LOAD_PROC(alGetEffectiv);
LOAD_PROC(alGenAuxiliaryEffectSlots);
LOAD_PROC(alDeleteAuxiliaryEffectSlots);
LOAD_PROC(alIsAuxiliaryEffectSlot);
LOAD_PROC(alAuxiliaryEffectSlotf);
LOAD_PROC(alAuxiliaryEffectSlotfv);
LOAD_PROC(alAuxiliaryEffectSloti);
LOAD_PROC(alAuxiliaryEffectSlotiv);
LOAD_PROC(alGetAuxiliaryEffectSlotf);
LOAD_PROC(alGetAuxiliaryEffectSlotfv);
LOAD_PROC(alGetAuxiliaryEffectSloti);
LOAD_PROC(alGetAuxiliaryEffectSlotiv);
}
#undef LOAD_PROC
}
ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *devicename)
{
ALCdevice *device = nullptr;
ALint idx = 0;
/* Prior to the enumeration extension, apps would hardcode these names as a
* quality hint for the wrapper driver. Ignore them since there's no sane
* way to map them.
*/
if(devicename && (devicename[0] == '\0' ||
strcmp(devicename, "DirectSound3D") == 0 ||
strcmp(devicename, "DirectSound") == 0 ||
strcmp(devicename, "MMSYSTEM") == 0))
devicename = nullptr;
if(devicename)
{
{
std::lock_guard<std::recursive_mutex> _{EnumerationLock};
if(DevicesList.Names.empty())
(void)alcGetString(nullptr, ALC_DEVICE_SPECIFIER);
idx = GetDriverIndexForName(&DevicesList, devicename);
if(idx < 0)
{
if(AllDevicesList.Names.empty())
(void)alcGetString(nullptr, ALC_ALL_DEVICES_SPECIFIER);
idx = GetDriverIndexForName(&AllDevicesList, devicename);
}
}
if(idx < 0)
{
LastError.store(ALC_INVALID_VALUE);
TRACE("Failed to find driver for name \"%s\"\n", devicename);
return nullptr;
}
TRACE("Found driver %d for name \"%s\"\n", idx, devicename);
device = DriverList[idx]->alcOpenDevice(devicename);
}
else
{
for(const auto &drv : DriverList)
{
if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_ENUMERATION_EXT"))
{
TRACE("Using default device from driver %d\n", idx);
device = drv->alcOpenDevice(nullptr);
break;
}
++idx;
}
}
if(device)
{
if(DeviceIfaceMap.insert(device, idx) != ALC_NO_ERROR)
{
DriverList[idx]->alcCloseDevice(device);
device = nullptr;
}
}
return device;
}
ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *device)
{
ALint idx;
if(!device || (idx=DeviceIfaceMap.lookupByKey(device)) < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return ALC_FALSE;
}
if(!DriverList[idx]->alcCloseDevice(device))
return ALC_FALSE;
DeviceIfaceMap.removeByKey(device);
return ALC_TRUE;
}
ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrlist)
{
ALCcontext *context;
ALint idx;
if(!device || (idx=DeviceIfaceMap.lookupByKey(device)) < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return nullptr;
}
context = DriverList[idx]->alcCreateContext(device, attrlist);
if(context)
{
if(ContextIfaceMap.insert(context, idx) != ALC_NO_ERROR)
{
DriverList[idx]->alcDestroyContext(context);
context = nullptr;
}
}
return context;
}
ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
{
ALint idx = -1;
std::lock_guard<std::mutex> _{ContextSwitchLock};
if(context)
{
idx = ContextIfaceMap.lookupByKey(context);
if(idx < 0)
{
LastError.store(ALC_INVALID_CONTEXT);
return ALC_FALSE;
}
if(!DriverList[idx]->alcMakeContextCurrent(context))
return ALC_FALSE;
auto do_init = [idx]() { InitCtxFuncs(*DriverList[idx]); };
std::call_once(DriverList[idx]->InitOnceCtx, do_init);
}
/* Unset the context from the old driver if it's different from the new
* current one.
*/
if(idx < 0)
{
DriverIface *oldiface = GetThreadDriver();
if(oldiface) oldiface->alcSetThreadContext(nullptr);
oldiface = CurrentCtxDriver.exchange(nullptr);
if(oldiface) oldiface->alcMakeContextCurrent(nullptr);
}
else
{
DriverIface *oldiface = GetThreadDriver();
if(oldiface && oldiface != DriverList[idx].get())
oldiface->alcSetThreadContext(nullptr);
oldiface = CurrentCtxDriver.exchange(DriverList[idx].get());
if(oldiface && oldiface != DriverList[idx].get())
oldiface->alcMakeContextCurrent(nullptr);
}
SetThreadDriver(nullptr);
return ALC_TRUE;
}
ALC_API void ALC_APIENTRY alcProcessContext(ALCcontext *context)
{
if(context)
{
ALint idx = ContextIfaceMap.lookupByKey(context);
if(idx >= 0)
return DriverList[idx]->alcProcessContext(context);
}
LastError.store(ALC_INVALID_CONTEXT);
}
ALC_API void ALC_APIENTRY alcSuspendContext(ALCcontext *context)
{
if(context)
{
ALint idx = ContextIfaceMap.lookupByKey(context);
if(idx >= 0)
return DriverList[idx]->alcSuspendContext(context);
}
LastError.store(ALC_INVALID_CONTEXT);
}
ALC_API void ALC_APIENTRY alcDestroyContext(ALCcontext *context)
{
ALint idx;
if(!context || (idx=ContextIfaceMap.lookupByKey(context)) < 0)
{
LastError.store(ALC_INVALID_CONTEXT);
return;
}
DriverList[idx]->alcDestroyContext(context);
ContextIfaceMap.removeByKey(context);
}
ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(void)
{
DriverIface *iface = GetThreadDriver();
if(!iface) iface = CurrentCtxDriver.load();
return iface ? iface->alcGetCurrentContext() : nullptr;
}
ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *context)
{
if(context)
{
ALint idx = ContextIfaceMap.lookupByKey(context);
if(idx >= 0)
return DriverList[idx]->alcGetContextsDevice(context);
}
LastError.store(ALC_INVALID_CONTEXT);
return nullptr;
}
ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx < 0) return ALC_INVALID_DEVICE;
return DriverList[idx]->alcGetError(device);
}
return LastError.exchange(ALC_NO_ERROR);
}
ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extname)
{
const char *ptr;
size_t len;
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return ALC_FALSE;
}
return DriverList[idx]->alcIsExtensionPresent(device, extname);
}
len = strlen(extname);
ptr = alcExtensionList;
while(ptr && *ptr)
{
if(al::strncasecmp(ptr, extname, len) == 0 && (ptr[len] == '\0' || isspace(ptr[len])))
return ALC_TRUE;
if((ptr=strchr(ptr, ' ')) != nullptr)
{
do {
++ptr;
} while(isspace(*ptr));
}
}
return ALC_FALSE;
}
ALC_API void* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcname)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return nullptr;
}
return DriverList[idx]->alcGetProcAddress(device, funcname);
}
auto iter = std::find_if(alcFunctions.cbegin(), alcFunctions.cend(),
[funcname](const FuncExportEntry &entry) -> bool
{ return strcmp(funcname, entry.funcName) == 0; }
);
return (iter != alcFunctions.cend()) ? iter->address : nullptr;
}
ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumname)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return 0;
}
return DriverList[idx]->alcGetEnumValue(device, enumname);
}
auto iter = std::find_if(alcEnumerations.cbegin(), alcEnumerations.cend(),
[enumname](const EnumExportEntry &entry) -> bool
{ return strcmp(enumname, entry.enumName) == 0; }
);
return (iter != alcEnumerations.cend()) ? iter->value : 0;
}
ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *device, ALCenum param)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return nullptr;
}
return DriverList[idx]->alcGetString(device, param);
}
switch(param)
{
case ALC_NO_ERROR:
return alcNoError;
case ALC_INVALID_ENUM:
return alcErrInvalidEnum;
case ALC_INVALID_VALUE:
return alcErrInvalidValue;
case ALC_INVALID_DEVICE:
return alcErrInvalidDevice;
case ALC_INVALID_CONTEXT:
return alcErrInvalidContext;
case ALC_OUT_OF_MEMORY:
return alcErrOutOfMemory;
case ALC_EXTENSIONS:
return alcExtensionList;
case ALC_DEVICE_SPECIFIER:
{
std::lock_guard<std::recursive_mutex> _{EnumerationLock};
DevicesList.clear();
ALint idx{0};
for(const auto &drv : DriverList)
{
/* Only enumerate names from drivers that support it. */
if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_ENUMERATION_EXT"))
AppendDeviceList(&DevicesList,
drv->alcGetString(nullptr, ALC_DEVICE_SPECIFIER), idx);
++idx;
}
/* Ensure the list is double-null termianted. */
if(DevicesList.Names.empty())
DevicesList.Names.emplace_back('\0');
DevicesList.Names.emplace_back('\0');
return DevicesList.Names.data();
}
case ALC_ALL_DEVICES_SPECIFIER:
{
std::lock_guard<std::recursive_mutex> _{EnumerationLock};
AllDevicesList.clear();
ALint idx{0};
for(const auto &drv : DriverList)
{
/* If the driver doesn't support ALC_ENUMERATE_ALL_EXT, substitute
* standard enumeration.
*/
if(drv->alcIsExtensionPresent(nullptr, "ALC_ENUMERATE_ALL_EXT"))
AppendDeviceList(&AllDevicesList,
drv->alcGetString(nullptr, ALC_ALL_DEVICES_SPECIFIER), idx);
else if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_ENUMERATION_EXT"))
AppendDeviceList(&AllDevicesList,
drv->alcGetString(nullptr, ALC_DEVICE_SPECIFIER), idx);
++idx;
}
/* Ensure the list is double-null termianted. */
if(AllDevicesList.Names.empty())
AllDevicesList.Names.emplace_back('\0');
AllDevicesList.Names.emplace_back('\0');
return AllDevicesList.Names.data();
}
case ALC_CAPTURE_DEVICE_SPECIFIER:
{
std::lock_guard<std::recursive_mutex> _{EnumerationLock};
CaptureDevicesList.clear();
ALint idx{0};
for(const auto &drv : DriverList)
{
if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_EXT_CAPTURE"))
AppendDeviceList(&CaptureDevicesList,
drv->alcGetString(nullptr, ALC_CAPTURE_DEVICE_SPECIFIER), idx);
++idx;
}
/* Ensure the list is double-null termianted. */
if(CaptureDevicesList.Names.empty())
CaptureDevicesList.Names.emplace_back('\0');
CaptureDevicesList.Names.emplace_back('\0');
return CaptureDevicesList.Names.data();
}
case ALC_DEFAULT_DEVICE_SPECIFIER:
{
for(const auto &drv : DriverList)
{
if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_ENUMERATION_EXT"))
return drv->alcGetString(nullptr, ALC_DEFAULT_DEVICE_SPECIFIER);
}
return "";
}
case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
{
for(const auto &drv : DriverList)
{
if(drv->alcIsExtensionPresent(nullptr, "ALC_ENUMERATE_ALL_EXT") != ALC_FALSE)
return drv->alcGetString(nullptr, ALC_DEFAULT_ALL_DEVICES_SPECIFIER);
}
return "";
}
case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
{
for(const auto &drv : DriverList)
{
if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_EXT_CAPTURE"))
return drv->alcGetString(nullptr, ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER);
}
return "";
}
default:
LastError.store(ALC_INVALID_ENUM);
break;
}
return nullptr;
}
ALC_API void ALC_APIENTRY alcGetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return;
}
return DriverList[idx]->alcGetIntegerv(device, param, size, values);
}
if(size <= 0 || values == nullptr)
{
LastError.store(ALC_INVALID_VALUE);
return;
}
switch(param)
{
case ALC_MAJOR_VERSION:
if(size >= 1)
{
values[0] = alcMajorVersion;
return;
}
/*fall-through*/
case ALC_MINOR_VERSION:
if(size >= 1)
{
values[0] = alcMinorVersion;
return;
}
LastError.store(ALC_INVALID_VALUE);
return;
case ALC_ATTRIBUTES_SIZE:
case ALC_ALL_ATTRIBUTES:
case ALC_FREQUENCY:
case ALC_REFRESH:
case ALC_SYNC:
case ALC_MONO_SOURCES:
case ALC_STEREO_SOURCES:
case ALC_CAPTURE_SAMPLES:
LastError.store(ALC_INVALID_DEVICE);
return;
default:
LastError.store(ALC_INVALID_ENUM);
return;
}
}
ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *devicename, ALCuint frequency, ALCenum format, ALCsizei buffersize)
{
ALCdevice *device = nullptr;
ALint idx = 0;
if(devicename && devicename[0] == '\0')
devicename = nullptr;
if(devicename)
{
{
std::lock_guard<std::recursive_mutex> _{EnumerationLock};
if(CaptureDevicesList.Names.empty())
(void)alcGetString(nullptr, ALC_CAPTURE_DEVICE_SPECIFIER);
idx = GetDriverIndexForName(&CaptureDevicesList, devicename);
}
if(idx < 0)
{
LastError.store(ALC_INVALID_VALUE);
TRACE("Failed to find driver for name \"%s\"\n", devicename);
return nullptr;
}
TRACE("Found driver %d for name \"%s\"\n", idx, devicename);
device = DriverList[idx]->alcCaptureOpenDevice(devicename, frequency, format, buffersize);
}
else
{
for(const auto &drv : DriverList)
{
if(drv->ALCVer >= MAKE_ALC_VER(1, 1)
|| drv->alcIsExtensionPresent(nullptr, "ALC_EXT_CAPTURE"))
{
TRACE("Using default capture device from driver %d\n", idx);
device = drv->alcCaptureOpenDevice(nullptr, frequency, format, buffersize);
break;
}
++idx;
}
}
if(device)
{
if(DeviceIfaceMap.insert(device, idx) != ALC_NO_ERROR)
{
DriverList[idx]->alcCaptureCloseDevice(device);
device = nullptr;
}
}
return device;
}
ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *device)
{
ALint idx;
if(!device || (idx=DeviceIfaceMap.lookupByKey(device)) < 0)
{
LastError.store(ALC_INVALID_DEVICE);
return ALC_FALSE;
}
if(!DriverList[idx]->alcCaptureCloseDevice(device))
return ALC_FALSE;
DeviceIfaceMap.removeByKey(device);
return ALC_TRUE;
}
ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx >= 0)
return DriverList[idx]->alcCaptureStart(device);
}
LastError.store(ALC_INVALID_DEVICE);
}
ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx >= 0)
return DriverList[idx]->alcCaptureStop(device);
}
LastError.store(ALC_INVALID_DEVICE);
}
ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
{
if(device)
{
ALint idx = DeviceIfaceMap.lookupByKey(device);
if(idx >= 0)
return DriverList[idx]->alcCaptureSamples(device, buffer, samples);
}
LastError.store(ALC_INVALID_DEVICE);
}
ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context)
{
ALCenum err = ALC_INVALID_CONTEXT;
ALint idx;
if(!context)
{
DriverIface *oldiface = GetThreadDriver();
if(oldiface && !oldiface->alcSetThreadContext(nullptr))
return ALC_FALSE;
SetThreadDriver(nullptr);
return ALC_TRUE;
}
idx = ContextIfaceMap.lookupByKey(context);
if(idx >= 0)
{
if(DriverList[idx]->alcSetThreadContext(context))
{
auto do_init = [idx]() { InitCtxFuncs(*DriverList[idx]); };
std::call_once(DriverList[idx]->InitOnceCtx, do_init);
DriverIface *oldiface = GetThreadDriver();
if(oldiface != DriverList[idx].get())
{
SetThreadDriver(DriverList[idx].get());
if(oldiface) oldiface->alcSetThreadContext(nullptr);
}
return ALC_TRUE;
}
err = DriverList[idx]->alcGetError(nullptr);
}
LastError.store(err);
return ALC_FALSE;
}
ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void)
{
DriverIface *iface = GetThreadDriver();
if(iface) return iface->alcGetThreadContext();
return nullptr;
}