mirror of
https://github.com/dhewm/dhewm3.git
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300 lines
8.9 KiB
C++
300 lines
8.9 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code 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 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code 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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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "idlib/math/Math.h"
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#include "sound/snd_local.h"
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#define mB_to_gain(millibels, property) \
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_mB_to_gain(millibels,AL_EAXREVERB_MIN_ ## property, AL_EAXREVERB_MAX_ ## property)
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static inline ALfloat _mB_to_gain(ALfloat millibels, ALfloat min, ALfloat max) {
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return idMath::ClampFloat(min, max, idMath::Pow(10.0f, millibels / 2000.0f));
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}
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idSoundEffect::idSoundEffect() :
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effect(0) {
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}
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idSoundEffect::~idSoundEffect() {
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if (soundSystemLocal.alIsEffect(effect))
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soundSystemLocal.alDeleteEffects(1, &effect);
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}
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bool idSoundEffect::alloc() {
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alGetError();
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ALenum e;
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soundSystemLocal.alGenEffects(1, &effect);
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e = alGetError();
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if (e != AL_NO_ERROR) {
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common->Warning("idSoundEffect::alloc: alGenEffects failed: 0x%x", e);
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return false;
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}
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soundSystemLocal.alEffecti(effect, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
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e = alGetError();
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if (e != AL_NO_ERROR) {
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common->Warning("idSoundEffect::alloc: alEffecti failed: 0x%x", e);
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return false;
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}
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return true;
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}
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/*
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===============
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idEFXFile::idEFXFile
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===============
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*/
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idEFXFile::idEFXFile( void ) {
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}
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/*
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===============
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idEFXFile::Clear
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===============
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*/
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void idEFXFile::Clear( void ) {
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effects.DeleteContents( true );
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}
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/*
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===============
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idEFXFile::~idEFXFile
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===============
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*/
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idEFXFile::~idEFXFile( void ) {
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Clear();
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}
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/*
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===============
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idEFXFile::FindEffect
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===============
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*/
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bool idEFXFile::FindEffect( idStr &name, ALuint *effect ) {
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int i;
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for ( i = 0; i < effects.Num(); i++ ) {
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if ( effects[i]->name == name ) {
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*effect = effects[i]->effect;
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return true;
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}
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}
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return false;
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}
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/*
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===============
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idEFXFile::ReadEffect
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===============
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*/
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#define efxi(param, value) \
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do { \
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ALint _v = value; \
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EFXprintf("alEffecti(" #param ", %d)\n", _v); \
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soundSystemLocal.alEffecti(effect->effect, param, _v); \
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err = alGetError(); \
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if (err != AL_NO_ERROR) \
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common->Warning("alEffecti(" # param ", %d) " \
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"failed: 0x%x", _v, err); \
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} while (false)
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#define efxf(param, value) \
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do { \
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ALfloat _v = value; \
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EFXprintf("alEffectf(" #param ", %.3f)\n", _v); \
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soundSystemLocal.alEffectf(effect->effect, param, _v); \
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err = alGetError(); \
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if (err != AL_NO_ERROR) \
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common->Warning("alEffectf(" # param ", %.3f) " \
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"failed: 0x%x", _v, err); \
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} while (false)
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#define efxfv(param, value0, value1, value2) \
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do { \
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ALfloat _v[3]; \
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_v[0] = value0; \
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_v[1] = value1; \
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_v[2] = value2; \
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EFXprintf("alEffectfv(" #param ", %.3f, %.3f, %.3f)\n", \
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_v[0], _v[1], _v[2]); \
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soundSystemLocal.alEffectfv(effect->effect, param, _v); \
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err = alGetError(); \
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if (err != AL_NO_ERROR) \
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common->Warning("alEffectfv(" # param ", %.3f, %.3f, %.3f) " \
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"failed: 0x%x", _v[0], _v[1], _v[2], err); \
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} while (false)
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bool idEFXFile::ReadEffect( idLexer &src, idSoundEffect *effect ) {
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idToken name, token;
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if ( !src.ReadToken( &token ) )
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return false;
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// reverb effect
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if ( token != "reverb" ) {
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// other effect (not supported at the moment)
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src.Error( "idEFXFile::ReadEffect: Unknown effect definition" );
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return false;
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}
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src.ReadTokenOnLine( &token );
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name = token;
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if ( !src.ReadToken( &token ) )
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return false;
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if ( token != "{" ) {
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src.Error( "idEFXFile::ReadEffect: { not found, found %s", token.c_str() );
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return false;
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}
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ALenum err;
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alGetError();
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EFXprintf("Loading EFX effect '%s' (#%u)\n", name.c_str(), effect->effect);
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do {
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if ( !src.ReadToken( &token ) ) {
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src.Error( "idEFXFile::ReadEffect: EOF without closing brace" );
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return false;
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}
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if ( token == "}" ) {
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effect->name = name;
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break;
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}
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if ( token == "environment" ) {
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// <+KittyCat> the "environment" token should be ignored (efx has nothing equatable to it)
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src.ParseInt();
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} else if ( token == "environment size" ) {
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float size = src.ParseFloat();
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efxf(AL_EAXREVERB_DENSITY, (size < 2.0f) ? (size - 1.0f) : 1.0f);
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} else if ( token == "environment diffusion" ) {
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efxf(AL_EAXREVERB_DIFFUSION, src.ParseFloat());
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} else if ( token == "room" ) {
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efxf(AL_EAXREVERB_GAIN, mB_to_gain(src.ParseInt(), GAIN));
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} else if ( token == "room hf" ) {
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efxf(AL_EAXREVERB_GAINHF, mB_to_gain(src.ParseInt(), GAINHF));
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} else if ( token == "room lf" ) {
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efxf(AL_EAXREVERB_GAINLF, mB_to_gain(src.ParseInt(), GAINLF));
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} else if ( token == "decay time" ) {
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efxf(AL_EAXREVERB_DECAY_TIME, src.ParseFloat());
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} else if ( token == "decay hf ratio" ) {
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efxf(AL_EAXREVERB_DECAY_HFRATIO, src.ParseFloat());
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} else if ( token == "decay lf ratio" ) {
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efxf(AL_EAXREVERB_DECAY_LFRATIO, src.ParseFloat());
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} else if ( token == "reflections" ) {
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efxf(AL_EAXREVERB_REFLECTIONS_GAIN, mB_to_gain(src.ParseInt(), REFLECTIONS_GAIN));
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} else if ( token == "reflections delay" ) {
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efxf(AL_EAXREVERB_REFLECTIONS_DELAY, src.ParseFloat());
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} else if ( token == "reflections pan" ) {
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efxfv(AL_EAXREVERB_REFLECTIONS_PAN, src.ParseFloat(), src.ParseFloat(), src.ParseFloat());
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} else if ( token == "reverb" ) {
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efxf(AL_EAXREVERB_LATE_REVERB_GAIN, mB_to_gain(src.ParseInt(), LATE_REVERB_GAIN));
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} else if ( token == "reverb delay" ) {
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efxf(AL_EAXREVERB_LATE_REVERB_DELAY, src.ParseFloat());
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} else if ( token == "reverb pan" ) {
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efxfv(AL_EAXREVERB_LATE_REVERB_PAN, src.ParseFloat(), src.ParseFloat(), src.ParseFloat());
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} else if ( token == "echo time" ) {
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efxf(AL_EAXREVERB_ECHO_TIME, src.ParseFloat());
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} else if ( token == "echo depth" ) {
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efxf(AL_EAXREVERB_ECHO_DEPTH, src.ParseFloat());
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} else if ( token == "modulation time" ) {
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efxf(AL_EAXREVERB_MODULATION_TIME, src.ParseFloat());
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} else if ( token == "modulation depth" ) {
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efxf(AL_EAXREVERB_MODULATION_DEPTH, src.ParseFloat());
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} else if ( token == "air absorption hf" ) {
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efxf(AL_EAXREVERB_AIR_ABSORPTION_GAINHF, mB_to_gain(src.ParseFloat(), AIR_ABSORPTION_GAINHF));
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} else if ( token == "hf reference" ) {
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efxf(AL_EAXREVERB_HFREFERENCE, src.ParseFloat());
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} else if ( token == "lf reference" ) {
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efxf(AL_EAXREVERB_LFREFERENCE, src.ParseFloat());
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} else if ( token == "room rolloff factor" ) {
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efxf(AL_EAXREVERB_ROOM_ROLLOFF_FACTOR, src.ParseFloat());
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} else if ( token == "flags" ) {
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src.ReadTokenOnLine( &token );
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unsigned int flags = token.GetUnsignedIntValue();
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efxi(AL_EAXREVERB_DECAY_HFLIMIT, (flags & 0x20) ? AL_TRUE : AL_FALSE);
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// the other SCALE flags have no equivalent in efx
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} else {
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src.ReadTokenOnLine( &token );
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src.Error( "idEFXFile::ReadEffect: Invalid parameter in reverb definition" );
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}
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} while ( 1 );
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return true;
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}
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/*
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===============
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idEFXFile::LoadFile
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===============
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*/
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bool idEFXFile::LoadFile( const char *filename, bool OSPath ) {
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idLexer src( LEXFL_NOSTRINGCONCAT );
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idToken token;
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src.LoadFile( filename, OSPath );
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if ( !src.IsLoaded() ) {
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return false;
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}
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if ( !src.ExpectTokenString( "Version" ) ) {
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return false;
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}
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if ( src.ParseInt() != 1 ) {
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src.Error( "idEFXFile::LoadFile: Unknown file version" );
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return false;
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}
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while ( !src.EndOfFile() ) {
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idSoundEffect *effect = new idSoundEffect;
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if (!effect->alloc()) {
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delete effect;
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Clear();
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return false;
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}
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if (ReadEffect(src, effect))
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effects.Append(effect);
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else
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delete effect;
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};
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return true;
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}
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