301 lines
6.5 KiB
C
301 lines
6.5 KiB
C
/*
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* Copyright (C) 2004 Christopher John Purnell
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* cjp@lost.org.uk
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "al_listener.h"
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#include "al_error.h"
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#include "al_vector.h"
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#include "alc_context.h"
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static ALvoid _alListenerSetSpeakers(AL_listener *listener,
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AL_speaker *speakers)
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{
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ALfloat matrix[9];
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ALuint i;
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_alVectorCrossProduct(matrix + 0, listener->orientation,
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listener->orientation + 3);
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_alVectorNormalize(matrix + 0, matrix + 0);
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_alVectorCrossProduct(matrix + 3, listener->orientation + 0,
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matrix + 0);
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_alVectorNormalize(matrix + 3, matrix + 3);
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_alVectorNormalize(matrix + 6, listener->orientation + 0);
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for (i = 0; i < _ALC_NUM_SPEAKERS; i++)
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{
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_alVectorMatrix(listener->speakers[i].position,
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speakers[i].position, matrix);
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}
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}
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ALvoid _alInitListener(AL_listener *listener, AL_speaker *speakers)
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{
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ALuint i;
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listener->gain = 1.0f;
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listener->position[0] = 0.0f;
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listener->position[1] = 0.0f;
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listener->position[2] = 0.0f;
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listener->velocity[0] = 0.0f;
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listener->velocity[1] = 0.0f;
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listener->velocity[2] = 0.0f;
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listener->orientation[0] = 0.0f;
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listener->orientation[1] = 0.0f;
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listener->orientation[2] = 0.0f;
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listener->orientation[3] = 0.0f;
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listener->orientation[4] = 0.0f;
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listener->orientation[5] = 0.0f;
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for (i = 0; i < _ALC_NUM_SPEAKERS; i++)
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{
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listener->speakers[i].gain = speakers[i].gain;
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}
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_alListenerSetSpeakers(listener, speakers);
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}
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ALvoid alListeneri(ALenum pname, ALint value)
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{
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alListenerf(pname, (ALfloat)value);
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}
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ALvoid alListenerf(ALenum pname, ALfloat value)
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{
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AL_context *ctx;
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if (!(ctx = _alcCurrentContext))
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{
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_alSetError(AL_INVALID_OPERATION);
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return;
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}
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_alcLockContext(ctx);
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switch (pname)
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{
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case AL_GAIN:
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_alRangedAssign1(ctx->listener.gain, value, 0.0f);
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break;
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default:
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_alSetError(AL_INVALID_ENUM);
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break;
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}
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_alcUnlockContext(ctx);
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}
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ALvoid alListener3f(ALenum pname, ALfloat f1, ALfloat f2, ALfloat f3)
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{
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AL_context *ctx;
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if (!(ctx = _alcCurrentContext))
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{
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_alSetError(AL_INVALID_OPERATION);
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return;
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}
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_alcLockContext(ctx);
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switch (pname)
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{
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case AL_POSITION:
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ctx->listener.position[0] = f1;
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ctx->listener.position[1] = f2;
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ctx->listener.position[2] = f3;
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break;
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case AL_VELOCITY:
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ctx->listener.velocity[0] = f1;
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ctx->listener.velocity[1] = f2;
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ctx->listener.velocity[2] = f3;
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break;
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default:
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_alSetError(AL_INVALID_ENUM);
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break;
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}
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_alcUnlockContext(ctx);
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}
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ALvoid alListenerfv(ALenum pname, ALfloat* values)
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{
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AL_context *ctx;
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if (!(ctx = _alcCurrentContext))
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{
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_alSetError(AL_INVALID_OPERATION);
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return;
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}
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_alcLockContext(ctx);
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switch (pname)
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{
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case AL_POSITION:
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ctx->listener.position[0] = values[0];
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ctx->listener.position[1] = values[1];
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ctx->listener.position[2] = values[2];
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break;
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case AL_VELOCITY:
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ctx->listener.velocity[0] = values[0];
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ctx->listener.velocity[1] = values[1];
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ctx->listener.velocity[2] = values[2];
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break;
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case AL_GAIN:
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_alRangedAssign1(ctx->listener.gain, values[0], 0.0f);
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break;
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case AL_ORIENTATION:
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ctx->listener.orientation[0] = values[0];
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ctx->listener.orientation[1] = values[1];
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ctx->listener.orientation[2] = values[2];
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ctx->listener.orientation[3] = values[3];
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ctx->listener.orientation[4] = values[4];
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ctx->listener.orientation[5] = values[5];
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_alListenerSetSpeakers(&ctx->listener, ctx->speakers);
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break;
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default:
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_alSetError(AL_INVALID_ENUM);
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break;
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}
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_alcUnlockContext(ctx);
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}
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ALvoid alGetListeneri(ALenum pname, ALint *value)
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{
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ALint values[6];
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values[0] = *value;
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alGetListeneriv(pname, values);
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*value = values[0];
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}
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ALvoid alGetListeneriv(ALenum pname, ALint* values)
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{
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AL_context *ctx;
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if (!(ctx = _alcCurrentContext))
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{
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_alSetError(AL_INVALID_OPERATION);
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return;
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}
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_alcLockContext(ctx);
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switch (pname)
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{
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case AL_POSITION:
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values[0] = (ALint)ctx->listener.position[0];
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values[1] = (ALint)ctx->listener.position[1];
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values[2] = (ALint)ctx->listener.position[2];
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break;
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case AL_VELOCITY:
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values[0] = (ALint)ctx->listener.velocity[0];
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values[1] = (ALint)ctx->listener.velocity[1];
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values[2] = (ALint)ctx->listener.velocity[2];
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break;
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case AL_GAIN:
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values[0] = (ALint)ctx->listener.gain;
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break;
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case AL_ORIENTATION:
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values[0] = (ALint)ctx->listener.orientation[0];
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values[1] = (ALint)ctx->listener.orientation[1];
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values[2] = (ALint)ctx->listener.orientation[2];
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values[3] = (ALint)ctx->listener.orientation[3];
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values[4] = (ALint)ctx->listener.orientation[4];
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values[5] = (ALint)ctx->listener.orientation[5];
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break;
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default:
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_alSetError(AL_INVALID_ENUM);
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break;
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}
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_alcUnlockContext(ctx);
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}
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ALvoid alGetListenerf(ALenum pname, ALfloat *value)
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{
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ALfloat values[6];
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values[0] = *value;
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alGetListenerfv(pname, values);
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*value = values[0];
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}
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ALvoid alGetListener3f(ALenum pname, ALfloat *f1, ALfloat *f2, ALfloat *f3)
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{
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ALfloat values[6];
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values[0] = *f1;
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values[1] = *f2;
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values[2] = *f3;
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alGetListenerfv(pname, values);
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*f1 = values[0];
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*f2 = values[1];
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*f3 = values[2];
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}
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ALvoid alGetListenerfv(ALenum pname, ALfloat* values)
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{
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AL_context *ctx;
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if (!(ctx = _alcCurrentContext))
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{
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_alSetError(AL_INVALID_OPERATION);
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return;
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}
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_alcLockContext(ctx);
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switch (pname)
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{
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case AL_POSITION:
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values[0] = ctx->listener.position[0];
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values[1] = ctx->listener.position[1];
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values[2] = ctx->listener.position[2];
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break;
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case AL_VELOCITY:
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values[0] = ctx->listener.velocity[0];
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values[1] = ctx->listener.velocity[1];
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values[2] = ctx->listener.velocity[2];
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break;
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case AL_GAIN:
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values[0] = ctx->listener.gain;
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break;
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case AL_ORIENTATION:
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values[0] = ctx->listener.orientation[0];
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values[1] = ctx->listener.orientation[1];
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values[2] = ctx->listener.orientation[2];
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values[3] = ctx->listener.orientation[3];
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values[4] = ctx->listener.orientation[4];
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values[5] = ctx->listener.orientation[5];
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break;
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default:
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_alSetError(AL_INVALID_ENUM);
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break;
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}
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_alcUnlockContext(ctx);
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}
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