444 lines
13 KiB
C++
444 lines
13 KiB
C++
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2000 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include <cmath>
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#include "alMain.h"
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#include "alcontext.h"
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#include "alu.h"
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#include "alError.h"
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#include "alListener.h"
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#include "alSource.h"
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#define DO_UPDATEPROPS() do { \
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if(!context->DeferUpdates.load(std::memory_order_acquire)) \
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UpdateListenerProps(context.get()); \
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else \
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listener.PropsClean.clear(std::memory_order_release); \
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} while(0)
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AL_API ALvoid AL_APIENTRY alListenerf(ALenum param, ALfloat value)
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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switch(param)
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{
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case AL_GAIN:
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if(!(value >= 0.0f && std::isfinite(value)))
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SETERR_RETURN(context.get(), AL_INVALID_VALUE,, "Listener gain out of range");
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listener.Gain = value;
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DO_UPDATEPROPS();
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break;
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case AL_METERS_PER_UNIT:
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if(!(value >= AL_MIN_METERS_PER_UNIT && value <= AL_MAX_METERS_PER_UNIT))
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SETERR_RETURN(context.get(), AL_INVALID_VALUE,,
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"Listener meters per unit out of range");
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context->MetersPerUnit = value;
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if(!context->DeferUpdates.load(std::memory_order_acquire))
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UpdateContextProps(context.get());
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else
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context->PropsClean.clear(std::memory_order_release);
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener float property");
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}
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}
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AL_API ALvoid AL_APIENTRY alListener3f(ALenum param, ALfloat value1, ALfloat value2, ALfloat value3)
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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switch(param)
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{
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case AL_POSITION:
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if(!(std::isfinite(value1) && std::isfinite(value2) && std::isfinite(value3)))
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SETERR_RETURN(context.get(), AL_INVALID_VALUE,, "Listener position out of range");
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listener.Position[0] = value1;
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listener.Position[1] = value2;
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listener.Position[2] = value3;
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DO_UPDATEPROPS();
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break;
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case AL_VELOCITY:
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if(!(std::isfinite(value1) && std::isfinite(value2) && std::isfinite(value3)))
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SETERR_RETURN(context.get(), AL_INVALID_VALUE,, "Listener velocity out of range");
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listener.Velocity[0] = value1;
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listener.Velocity[1] = value2;
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listener.Velocity[2] = value3;
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DO_UPDATEPROPS();
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener 3-float property");
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}
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}
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AL_API ALvoid AL_APIENTRY alListenerfv(ALenum param, const ALfloat *values)
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{
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if(values)
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{
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switch(param)
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{
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case AL_GAIN:
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case AL_METERS_PER_UNIT:
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alListenerf(param, values[0]);
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return;
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case AL_POSITION:
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case AL_VELOCITY:
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alListener3f(param, values[0], values[1], values[2]);
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return;
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}
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}
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!values) SETERR_RETURN(context.get(), AL_INVALID_VALUE,, "NULL pointer");
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switch(param)
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{
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case AL_ORIENTATION:
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if(!(std::isfinite(values[0]) && std::isfinite(values[1]) && std::isfinite(values[2]) &&
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std::isfinite(values[3]) && std::isfinite(values[4]) && std::isfinite(values[5])))
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SETERR_RETURN(context.get(), AL_INVALID_VALUE,, "Listener orientation out of range");
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/* AT then UP */
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listener.Forward[0] = values[0];
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listener.Forward[1] = values[1];
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listener.Forward[2] = values[2];
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listener.Up[0] = values[3];
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listener.Up[1] = values[4];
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listener.Up[2] = values[5];
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DO_UPDATEPROPS();
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener float-vector property");
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}
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}
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AL_API ALvoid AL_APIENTRY alListeneri(ALenum param, ALint UNUSED(value))
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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std::lock_guard<almtx_t> _{context->PropLock};
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switch(param)
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{
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener integer property");
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}
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}
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AL_API void AL_APIENTRY alListener3i(ALenum param, ALint value1, ALint value2, ALint value3)
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{
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switch(param)
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{
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case AL_POSITION:
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case AL_VELOCITY:
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alListener3f(param, (ALfloat)value1, (ALfloat)value2, (ALfloat)value3);
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return;
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}
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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std::lock_guard<almtx_t> _{context->PropLock};
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switch(param)
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{
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener 3-integer property");
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}
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}
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AL_API void AL_APIENTRY alListeneriv(ALenum param, const ALint *values)
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{
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if(values)
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{
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ALfloat fvals[6];
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switch(param)
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{
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case AL_POSITION:
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case AL_VELOCITY:
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alListener3f(param, (ALfloat)values[0], (ALfloat)values[1], (ALfloat)values[2]);
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return;
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case AL_ORIENTATION:
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fvals[0] = (ALfloat)values[0];
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fvals[1] = (ALfloat)values[1];
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fvals[2] = (ALfloat)values[2];
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fvals[3] = (ALfloat)values[3];
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fvals[4] = (ALfloat)values[4];
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fvals[5] = (ALfloat)values[5];
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alListenerfv(param, fvals);
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return;
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}
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}
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!values)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener integer-vector property");
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}
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}
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AL_API ALvoid AL_APIENTRY alGetListenerf(ALenum param, ALfloat *value)
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!value)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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case AL_GAIN:
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*value = listener.Gain;
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break;
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case AL_METERS_PER_UNIT:
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*value = context->MetersPerUnit;
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener float property");
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}
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}
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AL_API ALvoid AL_APIENTRY alGetListener3f(ALenum param, ALfloat *value1, ALfloat *value2, ALfloat *value3)
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!value1 || !value2 || !value3)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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case AL_POSITION:
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*value1 = listener.Position[0];
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*value2 = listener.Position[1];
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*value3 = listener.Position[2];
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break;
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case AL_VELOCITY:
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*value1 = listener.Velocity[0];
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*value2 = listener.Velocity[1];
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*value3 = listener.Velocity[2];
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener 3-float property");
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}
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}
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AL_API ALvoid AL_APIENTRY alGetListenerfv(ALenum param, ALfloat *values)
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{
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switch(param)
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{
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case AL_GAIN:
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case AL_METERS_PER_UNIT:
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alGetListenerf(param, values);
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return;
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case AL_POSITION:
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case AL_VELOCITY:
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alGetListener3f(param, values+0, values+1, values+2);
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return;
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}
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!values)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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case AL_ORIENTATION:
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// AT then UP
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values[0] = listener.Forward[0];
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values[1] = listener.Forward[1];
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values[2] = listener.Forward[2];
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values[3] = listener.Up[0];
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values[4] = listener.Up[1];
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values[5] = listener.Up[2];
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener float-vector property");
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}
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}
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AL_API ALvoid AL_APIENTRY alGetListeneri(ALenum param, ALint *value)
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!value)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener integer property");
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}
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}
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AL_API void AL_APIENTRY alGetListener3i(ALenum param, ALint *value1, ALint *value2, ALint *value3)
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{
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!value1 || !value2 || !value3)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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case AL_POSITION:
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*value1 = (ALint)listener.Position[0];
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*value2 = (ALint)listener.Position[1];
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*value3 = (ALint)listener.Position[2];
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break;
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case AL_VELOCITY:
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*value1 = (ALint)listener.Velocity[0];
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*value2 = (ALint)listener.Velocity[1];
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*value3 = (ALint)listener.Velocity[2];
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener 3-integer property");
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}
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}
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AL_API void AL_APIENTRY alGetListeneriv(ALenum param, ALint* values)
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{
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switch(param)
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{
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case AL_POSITION:
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case AL_VELOCITY:
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alGetListener3i(param, values+0, values+1, values+2);
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return;
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}
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ContextRef context{GetContextRef()};
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if(UNLIKELY(!context)) return;
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ALlistener &listener = context->Listener;
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std::lock_guard<almtx_t> _{context->PropLock};
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if(!values)
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alSetError(context.get(), AL_INVALID_VALUE, "NULL pointer");
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else switch(param)
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{
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case AL_ORIENTATION:
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// AT then UP
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values[0] = (ALint)listener.Forward[0];
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values[1] = (ALint)listener.Forward[1];
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values[2] = (ALint)listener.Forward[2];
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values[3] = (ALint)listener.Up[0];
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values[4] = (ALint)listener.Up[1];
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values[5] = (ALint)listener.Up[2];
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break;
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default:
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alSetError(context.get(), AL_INVALID_ENUM, "Invalid listener integer-vector property");
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}
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}
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void UpdateListenerProps(ALCcontext *context)
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{
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/* Get an unused proprty container, or allocate a new one as needed. */
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ALlistenerProps *props{context->FreeListenerProps.load(std::memory_order_acquire)};
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if(!props)
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props = static_cast<ALlistenerProps*>(al_calloc(16, sizeof(*props)));
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else
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{
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struct ALlistenerProps *next;
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do {
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next = props->next.load(std::memory_order_relaxed);
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} while(context->FreeListenerProps.compare_exchange_weak(props, next,
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std::memory_order_seq_cst, std::memory_order_acquire) == 0);
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}
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/* Copy in current property values. */
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ALlistener &listener = context->Listener;
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props->Position[0] = listener.Position[0];
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props->Position[1] = listener.Position[1];
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props->Position[2] = listener.Position[2];
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props->Velocity[0] = listener.Velocity[0];
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props->Velocity[1] = listener.Velocity[1];
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props->Velocity[2] = listener.Velocity[2];
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props->Forward[0] = listener.Forward[0];
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props->Forward[1] = listener.Forward[1];
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props->Forward[2] = listener.Forward[2];
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props->Up[0] = listener.Up[0];
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props->Up[1] = listener.Up[1];
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props->Up[2] = listener.Up[2];
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props->Gain = listener.Gain;
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/* Set the new container for updating internal parameters. */
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props = listener.Update.exchange(props, std::memory_order_acq_rel);
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if(props)
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{
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/* If there was an unused update container, put it back in the
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* freelist.
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*/
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AtomicReplaceHead(context->FreeListenerProps, props);
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}
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}
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