al_init.cpp File Reference

#include "audiolib.h"
#include "config_xml.h"
#include "xml_support.h"
#include "vs_globals.h"

Go to the source code of this file.

Functions
void	AUDChangeVolume (float volume)
	Changes the volume (generally 0 or between 1 and 1000) More...
float	AUDGetVolume ()
void	AUDChangeDoppler (float doppler)
	changes the scale used for doppler...generally between 0 for off or .01 and 10 More...
float	AUDGetDoppler ()
	Gets current doppler val. More...
bool	AUDInit ()
void	AUDDestroy ()

Function Documentation

void AUDChangeDoppler

(

float

doppler)

changes the scale used for doppler...generally between 0 for off or .01 and 10

Definition at line 102 of file al_init.cpp.

Referenced by decdop(), and incdop().

{
#ifdef HAVE_AL
    if (doppler <= 0)
        usedoppler = false;
    else
        usedoppler = true;
    scalevel = doppler;
#endif
}

void AUDChangeVolume

(

float

volume)

Changes the volume (generally 0 or between 1 and 1000)

Definition at line 81 of file al_init.cpp.

References volume.

Referenced by decvol(), and incvol().

{
#ifdef HAVE_AL
    if (volume == 0) {
        usepositional = false;
        return;
    } else {
        usepositional = true;
    }
    scalepos = 1./volume;
#endif
}

void AUDDestroy

(

)

Definition at line 204 of file al_init.cpp.

References AUDDeleteSound(), AUDStopPlaying(), buffer, and i.

Referenced by cleanup().

{
#ifdef HAVE_AL
    //Go through and delete all loaded wavs
    unsigned int i;
    for (i = 0; i < sounds.size(); i++) {
        if (sounds[i].buffer != 0)
            AUDStopPlaying( i );
        AUDDeleteSound( i );
    }
    for (i = 0; i < unusedsrcs.size(); i++)
        alDeleteSources( 1, &unusedsrcs[i] );
    for (i = 0; i < buffers.size(); i++)
        alDeleteBuffers( 1, &buffers[i] );
    buffers.clear();
    if (context_id)
        alcDestroyContext( (ALCcontext*) context_id );
    if (dev)
        alcCloseDevice( dev );
#endif
}

float AUDGetDoppler

(

)

Gets current doppler val.

Definition at line 112 of file al_init.cpp.

Referenced by decdop(), and incdop().

{
#ifdef HAVE_AL
    return scalevel;

#else
    return 1;
#endif
}

float AUDGetVolume

(

)

Definition at line 93 of file al_init.cpp.

Referenced by decvol(), and incvol().

{
#ifdef HAVE_AL
    return 1./scalepos;

#else
    return 1;
#endif
}

bool AUDInit

(

)

Definition at line 132 of file al_init.cpp.

References game_data_t::audio_frequency_mode, g_game, VegaConfig::getVariable(), game_data_t::max_sound_sources, game_data_t::music_enabled, XMLSupport::parse_bool(), XMLSupport::parse_float(), XMLSupport::parse_int(), game_data_t::sound_enabled, and vs_config.

Referenced by main().

{
    g_game.sound_enabled = 
    g_game.music_enabled = false;
#ifdef HAVE_AL
    usedoppler    = XMLSupport::parse_bool( vs_config->getVariable( "audio", "Doppler", "false" ) );
    usepositional = XMLSupport::parse_bool( vs_config->getVariable( "audio", "Positional", "true" ) );
    double linuxadjust=1;
#ifndef _WIN32
#ifndef __APPLE__
    linuxadjust=1./3.;
#endif
#endif
    scalepos = 1.0f/(XMLSupport::parse_float( vs_config->getVariable( "audio", "Volume", "100" ) )
                  *linuxadjust
        );
    scalevel = XMLSupport::parse_float( vs_config->getVariable( "audio", "DopplerScale", "1" ) );
    //enabled = XMLSupport::parse_bool (vs_config->getVariable ("audio","enabled","true"));
    g_game.audio_frequency_mode = XMLSupport::parse_int( vs_config->getVariable( "audio", "frequency", "48000" ) );
    maxallowedsingle     = XMLSupport::parse_int( vs_config->getVariable( "audio", "MaxSingleSounds", "8" ) );
    g_game.max_sound_sources = 
    maxallowedtotal      = XMLSupport::parse_int( vs_config->getVariable( "audio", "MaxTotalSounds", "20" ) );
    bool sound_enabled = XMLSupport::parse_bool( vs_config->getVariable( "audio", "Sound", "true" ) );
    bool music_enabled = XMLSupport::parse_bool( vs_config->getVariable( "audio", "Music", "true" ) );
    if (!sound_enabled && !music_enabled)
        return false;
    int attrlist[] = {ALC_FREQUENCY, g_game.audio_frequency_mode, 0};
#ifdef _WIN32
    dev = alcOpenDevice(  (ALCchar*)"DirectSound3D" );
    // dev = alcOpenDevice(  (ALCubyte*)"DirectSound3D" ); pre update. New includes barf on ubyte. cannot convert parameter.
#else
#ifdef __APPLE__
    dev = alcOpenDevice( "sdl" );
    if (dev == NULL)
        dev = alcOpenDevice( NULL );
#else
    dev = alcOpenDevice( NULL );
#endif
#endif
    if (dev == NULL)
        return false;
    context_id = alcCreateContext( dev, attrlist );
    if (context_id == NULL) {
        alcCloseDevice( dev );
        return false;
    }
    alcMakeContextCurrent( (ALCcontext*) context_id );

    fixup_function_pointers();
    ALenum alGetEr = 0;
    ALuint cursrc;
    alGetError();
    alGenSources( 1, &cursrc );
    alGetEr = alGetError();
    while (alGetEr == 0) {
        unusedsrcs.push_back( cursrc );
        if (unusedsrcs.size() >= maxallowedtotal)
            break;
        alGenSources( 1, &cursrc );
        alGetEr = alGetError();
    }
    
    alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
    
    g_game.sound_enabled = sound_enabled;
    g_game.music_enabled = music_enabled;
    
    return true;
#endif
    return false;
}