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|
/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2005 Stuart Dalton (badcdev@gmail.com)
This file is part of Quake III Arena source code.
Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "snd_local.h"
#include "snd_codec.h"
#include "client.h"
#if USE_OPENAL
#include "qal.h"
// Console variables specific to OpenAL
cvar_t *s_alPrecache;
cvar_t *s_alGain;
cvar_t *s_alSources;
cvar_t *s_alDopplerFactor;
cvar_t *s_alDopplerSpeed;
cvar_t *s_alMinDistance;
cvar_t *s_alRolloff;
cvar_t *s_alDriver;
cvar_t *s_alMaxSpeakerDistance;
cvar_t *s_alSpatEntOrigin;
/*
=================
S_AL_Format
=================
*/
static
ALuint S_AL_Format(int width, int channels)
{
ALuint format = AL_FORMAT_MONO16;
// Work out format
if(width == 1)
{
if(channels == 1)
format = AL_FORMAT_MONO8;
else if(channels == 2)
format = AL_FORMAT_STEREO8;
}
else if(width == 2)
{
if(channels == 1)
format = AL_FORMAT_MONO16;
else if(channels == 2)
format = AL_FORMAT_STEREO16;
}
return format;
}
/*
=================
S_AL_ErrorMsg
=================
*/
static const char *S_AL_ErrorMsg(ALenum error)
{
switch(error)
{
case AL_NO_ERROR:
return "No error";
case AL_INVALID_NAME:
return "Invalid name";
case AL_INVALID_ENUM:
return "Invalid enumerator";
case AL_INVALID_VALUE:
return "Invalid value";
case AL_INVALID_OPERATION:
return "Invalid operation";
case AL_OUT_OF_MEMORY:
return "Out of memory";
default:
return "Unknown error";
}
}
//===========================================================================
typedef struct alSfx_s
{
char filename[MAX_QPATH];
ALuint buffer; // OpenAL buffer
qboolean isDefault; // Couldn't be loaded - use default FX
qboolean inMemory; // Sound is stored in memory
qboolean isLocked; // Sound is locked (can not be unloaded)
int lastUsedTime; // Time last used
} alSfx_t;
static qboolean alBuffersInitialised = qfalse;
// Sound effect storage, data structures
#define MAX_SFX 4096
static alSfx_t knownSfx[MAX_SFX];
static int numSfx = 0;
static sfxHandle_t default_sfx;
/*
=================
S_AL_BufferFindFree
Find a free handle
=================
*/
static sfxHandle_t S_AL_BufferFindFree( void )
{
int i;
for(i = 0; i < MAX_SFX; i++)
{
// Got one
if(knownSfx[i].filename[0] == '\0')
return i;
}
// Shit...
Com_Error(ERR_FATAL, "S_AL_BufferFindFree: No free sound handles");
return -1;
}
/*
=================
S_AL_BufferFind
Find a sound effect if loaded, set up a handle otherwise
=================
*/
static sfxHandle_t S_AL_BufferFind(const char *filename)
{
// Look it up in the table
sfxHandle_t sfx = -1;
int i;
for(i = 0; i < MAX_SFX; i++)
{
if(!Q_stricmp(knownSfx[i].filename, filename))
{
sfx = i;
break;
}
}
// Not found in table?
if(sfx == -1)
{
alSfx_t *ptr;
sfx = S_AL_BufferFindFree();
// Clear and copy the filename over
ptr = &knownSfx[sfx];
memset(ptr, 0, sizeof(*ptr));
strcpy(ptr->filename, filename);
}
// Return the handle
return sfx;
}
/*
=================
S_AL_BufferUseDefault
=================
*/
static void S_AL_BufferUseDefault(sfxHandle_t sfx)
{
if(sfx == default_sfx)
Com_Error(ERR_FATAL, "Can't load default sound effect %s\n", knownSfx[sfx].filename);
Com_Printf( S_COLOR_YELLOW "WARNING: Using default sound for %s\n", knownSfx[sfx].filename);
knownSfx[sfx].isDefault = qtrue;
knownSfx[sfx].buffer = knownSfx[default_sfx].buffer;
}
/*
=================
S_AL_BufferUnload
=================
*/
static void S_AL_BufferUnload(sfxHandle_t sfx)
{
ALenum error;
if(knownSfx[sfx].filename[0] == '\0')
return;
if(!knownSfx[sfx].inMemory)
return;
// Delete it
qalDeleteBuffers(1, &knownSfx[sfx].buffer);
if((error = qalGetError()) != AL_NO_ERROR)
Com_Printf( S_COLOR_RED "ERROR: Can't delete sound buffer for %s\n",
knownSfx[sfx].filename);
knownSfx[sfx].inMemory = qfalse;
}
/*
=================
S_AL_BufferEvict
=================
*/
static qboolean S_AL_BufferEvict( void )
{
int i, oldestBuffer = -1;
int oldestTime = Sys_Milliseconds( );
for( i = 0; i < MAX_SFX; i++ )
{
if( !knownSfx[ i ].filename[ 0 ] )
continue;
if( !knownSfx[ i ].inMemory )
continue;
if( knownSfx[ i ].lastUsedTime < oldestTime )
{
oldestTime = knownSfx[ i ].lastUsedTime;
oldestBuffer = i;
}
}
if( oldestBuffer >= 0 )
{
S_AL_BufferUnload( oldestBuffer );
return qtrue;
}
else
return qfalse;
}
/*
=================
S_AL_BufferLoad
=================
*/
static void S_AL_BufferLoad(sfxHandle_t sfx)
{
ALenum error;
void *data;
snd_info_t info;
ALuint format;
// Nothing?
if(knownSfx[sfx].filename[0] == '\0')
return;
// Player SFX
if(knownSfx[sfx].filename[0] == '*')
return;
// Already done?
if((knownSfx[sfx].inMemory) || (knownSfx[sfx].isDefault))
return;
// Try to load
data = S_CodecLoad(knownSfx[sfx].filename, &info);
if(!data)
{
S_AL_BufferUseDefault(sfx);
return;
}
format = S_AL_Format(info.width, info.channels);
// Create a buffer
qalGenBuffers(1, &knownSfx[sfx].buffer);
if((error = qalGetError()) != AL_NO_ERROR)
{
S_AL_BufferUseDefault(sfx);
Z_Free(data);
Com_Printf( S_COLOR_RED "ERROR: Can't create a sound buffer for %s - %s\n",
knownSfx[sfx].filename, S_AL_ErrorMsg(error));
return;
}
// Fill the buffer
if( info.size == 0 )
{
// We have no data to buffer, so buffer silence
byte dummyData[ 2 ] = { 0 };
qalBufferData(knownSfx[sfx].buffer, AL_FORMAT_MONO16, (void *)dummyData, 2, 22050);
}
else
qalBufferData(knownSfx[sfx].buffer, format, data, info.size, info.rate);
error = qalGetError();
// If we ran out of memory, start evicting the least recently used sounds
while(error == AL_OUT_OF_MEMORY)
{
if( !S_AL_BufferEvict( ) )
{
S_AL_BufferUseDefault(sfx);
Z_Free(data);
Com_Printf( S_COLOR_RED "ERROR: Out of memory loading %s\n", knownSfx[sfx].filename);
return;
}
// Try load it again
qalBufferData(knownSfx[sfx].buffer, format, data, info.size, info.rate);
error = qalGetError();
}
// Some other error condition
if(error != AL_NO_ERROR)
{
S_AL_BufferUseDefault(sfx);
Z_Free(data);
Com_Printf( S_COLOR_RED "ERROR: Can't fill sound buffer for %s - %s\n",
knownSfx[sfx].filename, S_AL_ErrorMsg(error));
return;
}
// Free the memory
Z_Free(data);
// Woo!
knownSfx[sfx].inMemory = qtrue;
}
/*
=================
S_AL_BufferUse
=================
*/
static
void S_AL_BufferUse(sfxHandle_t sfx)
{
if(knownSfx[sfx].filename[0] == '\0')
return;
if((!knownSfx[sfx].inMemory) && (!knownSfx[sfx].isDefault))
S_AL_BufferLoad(sfx);
knownSfx[sfx].lastUsedTime = Sys_Milliseconds();
}
/*
=================
S_AL_BufferInit
=================
*/
static
qboolean S_AL_BufferInit( void )
{
if(alBuffersInitialised)
return qtrue;
// Clear the hash table, and SFX table
memset(knownSfx, 0, sizeof(knownSfx));
numSfx = 0;
// Load the default sound, and lock it
default_sfx = S_AL_BufferFind("sound/feedback/hit.wav");
S_AL_BufferUse(default_sfx);
knownSfx[default_sfx].isLocked = qtrue;
// All done
alBuffersInitialised = qtrue;
return qtrue;
}
/*
=================
S_AL_BufferShutdown
=================
*/
static
void S_AL_BufferShutdown( void )
{
int i;
if(!alBuffersInitialised)
return;
// Unlock the default sound effect
knownSfx[default_sfx].isLocked = qfalse;
// Free all used effects
for(i = 0; i < MAX_SFX; i++)
S_AL_BufferUnload(i);
// Clear the tables
memset(knownSfx, 0, sizeof(knownSfx));
// All undone
alBuffersInitialised = qfalse;
}
/*
=================
S_AL_RegisterSound
=================
*/
static
sfxHandle_t S_AL_RegisterSound( const char *sample, qboolean compressed )
{
sfxHandle_t sfx = S_AL_BufferFind(sample);
if( s_alPrecache->integer && (!knownSfx[sfx].inMemory) && (!knownSfx[sfx].isDefault))
S_AL_BufferLoad(sfx);
knownSfx[sfx].lastUsedTime = Com_Milliseconds();
return sfx;
}
/*
=================
S_AL_BufferGet
Return's an sfx's buffer
=================
*/
static
ALuint S_AL_BufferGet(sfxHandle_t sfx)
{
return knownSfx[sfx].buffer;
}
//===========================================================================
typedef struct src_s
{
ALuint alSource; // OpenAL source object
sfxHandle_t sfx; // Sound effect in use
int lastUsedTime; // Last time used
alSrcPriority_t priority; // Priority
int entity; // Owning entity (-1 if none)
int channel; // Associated channel (-1 if none)
int isActive; // Is this source currently in use?
int isLocked; // This is locked (un-allocatable)
int isLooping; // Is this a looping effect (attached to an entity)
int isTracking; // Is this object tracking it's owner
qboolean local; // Is this local (relative to the cam)
} src_t;
#define MAX_SRC 128
static src_t srcList[MAX_SRC];
static int srcCount = 0;
static qboolean alSourcesInitialised = qfalse;
static vec3_t lastListenerOrigin = { 0.0f, 0.0f, 0.0f };
typedef struct sentity_s
{
vec3_t origin;
int srcAllocated; // If a src_t has been allocated to this entity
int srcIndex;
qboolean loopAddedThisFrame;
alSrcPriority_t loopPriority;
sfxHandle_t loopSfx;
qboolean startLoopingSound;
} sentity_t;
static sentity_t entityList[MAX_GENTITIES];
/*
=================
S_AL_SanitiseVector
=================
*/
#define S_AL_SanitiseVector(v) _S_AL_SanitiseVector(v,__LINE__)
static void _S_AL_SanitiseVector( vec3_t v, int line )
{
if( Q_isnan( v[ 0 ] ) || Q_isnan( v[ 1 ] ) || Q_isnan( v[ 2 ] ) )
{
Com_DPrintf( S_COLOR_YELLOW "WARNING: vector with one or more NaN components "
"being passed to OpenAL at %s:%d -- zeroing\n", __FILE__, line );
VectorClear( v );
}
}
/*
=================
S_AL_SrcInit
=================
*/
static
qboolean S_AL_SrcInit( void )
{
int i;
int limit;
ALenum error;
// Clear the sources data structure
memset(srcList, 0, sizeof(srcList));
srcCount = 0;
// Cap s_alSources to MAX_SRC
limit = s_alSources->integer;
if(limit > MAX_SRC)
limit = MAX_SRC;
else if(limit < 16)
limit = 16;
// Allocate as many sources as possible
for(i = 0; i < limit; i++)
{
qalGenSources(1, &srcList[i].alSource);
if((error = qalGetError()) != AL_NO_ERROR)
break;
srcCount++;
}
// All done. Print this for informational purposes
Com_Printf( "Allocated %d sources.\n", srcCount);
alSourcesInitialised = qtrue;
return qtrue;
}
/*
=================
S_AL_SrcShutdown
=================
*/
static
void S_AL_SrcShutdown( void )
{
int i;
if(!alSourcesInitialised)
return;
// Destroy all the sources
for(i = 0; i < srcCount; i++)
{
if(srcList[i].isLocked)
Com_DPrintf( S_COLOR_YELLOW "WARNING: Source %d is locked\n", i);
qalSourceStop(srcList[i].alSource);
qalDeleteSources(1, &srcList[i].alSource);
}
memset(srcList, 0, sizeof(srcList));
alSourcesInitialised = qfalse;
}
/*
=================
S_AL_SrcSetup
=================
*/
static void S_AL_SrcSetup(srcHandle_t src, sfxHandle_t sfx, alSrcPriority_t priority,
int entity, int channel, qboolean local)
{
ALuint buffer;
float null_vector[] = {0, 0, 0};
// Mark the SFX as used, and grab the raw AL buffer
S_AL_BufferUse(sfx);
buffer = S_AL_BufferGet(sfx);
// Set up src struct
srcList[src].lastUsedTime = Sys_Milliseconds();
srcList[src].sfx = sfx;
srcList[src].priority = priority;
srcList[src].entity = entity;
srcList[src].channel = channel;
srcList[src].isActive = qtrue;
srcList[src].isLocked = qfalse;
srcList[src].isLooping = qfalse;
srcList[src].isTracking = qfalse;
srcList[src].local = local;
// Set up OpenAL source
qalSourcei(srcList[src].alSource, AL_BUFFER, buffer);
qalSourcef(srcList[src].alSource, AL_PITCH, 1.0f);
qalSourcef(srcList[src].alSource, AL_GAIN, s_alGain->value * s_volume->value);
qalSourcefv(srcList[src].alSource, AL_POSITION, null_vector);
qalSourcefv(srcList[src].alSource, AL_VELOCITY, null_vector);
qalSourcei(srcList[src].alSource, AL_LOOPING, AL_FALSE);
qalSourcef(srcList[src].alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
if(local)
{
qalSourcei(srcList[src].alSource, AL_SOURCE_RELATIVE, AL_TRUE);
qalSourcef(srcList[src].alSource, AL_ROLLOFF_FACTOR, 0);
}
else
{
qalSourcei(srcList[src].alSource, AL_SOURCE_RELATIVE, AL_FALSE);
qalSourcef(srcList[src].alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
}
}
/*
=================
S_AL_SrcKill
=================
*/
static void S_AL_SrcKill(srcHandle_t src)
{
// I'm not touching it. Unlock it first.
if(srcList[src].isLocked)
return;
// Stop it if it's playing
if(srcList[src].isActive)
qalSourceStop(srcList[src].alSource);
// Remove the entity association
if((srcList[src].isLooping) && (srcList[src].entity != -1))
{
int ent = srcList[src].entity;
entityList[ent].srcAllocated = qfalse;
entityList[ent].srcIndex = -1;
entityList[ent].loopAddedThisFrame = qfalse;
entityList[ent].startLoopingSound = qfalse;
}
// Remove the buffer
qalSourcei(srcList[src].alSource, AL_BUFFER, 0);
srcList[src].sfx = 0;
srcList[src].lastUsedTime = 0;
srcList[src].priority = 0;
srcList[src].entity = -1;
srcList[src].channel = -1;
srcList[src].isActive = qfalse;
srcList[src].isLocked = qfalse;
srcList[src].isLooping = qfalse;
srcList[src].isTracking = qfalse;
}
/*
=================
S_AL_SrcAlloc
=================
*/
static
srcHandle_t S_AL_SrcAlloc( alSrcPriority_t priority, int entnum, int channel )
{
int i;
int empty = -1;
int weakest = -1;
int weakest_time = Sys_Milliseconds();
int weakest_pri = 999;
for(i = 0; i < srcCount; i++)
{
// If it's locked, we aren't even going to look at it
if(srcList[i].isLocked)
continue;
// Is it empty or not?
if((!srcList[i].isActive) && (empty == -1))
empty = i;
else if(srcList[i].priority < priority)
{
// If it's older or has lower priority, flag it as weak
if((srcList[i].priority < weakest_pri) ||
(srcList[i].lastUsedTime < weakest_time))
{
weakest_pri = srcList[i].priority;
weakest_time = srcList[i].lastUsedTime;
weakest = i;
}
}
// The channel system is not actually adhered to by baseq3, and not
// implemented in snd_dma.c, so while the following is strictly correct, it
// causes incorrect behaviour versus defacto baseq3
#if 0
// Is it an exact match, and not on channel 0?
if((srcList[i].entity == entnum) && (srcList[i].channel == channel) && (channel != 0))
{
S_AL_SrcKill(i);
return i;
}
#endif
}
// Do we have an empty one?
if(empty != -1)
{
S_AL_SrcKill( empty );
return empty;
}
// No. How about an overridable one?
if(weakest != -1)
{
S_AL_SrcKill(weakest);
return weakest;
}
// Nothing. Return failure (cries...)
return -1;
}
/*
=================
S_AL_SrcFind
Finds an active source with matching entity and channel numbers
Returns -1 if there isn't one
=================
*/
#if 0
static
srcHandle_t S_AL_SrcFind(int entnum, int channel)
{
int i;
for(i = 0; i < srcCount; i++)
{
if(!srcList[i].isActive)
continue;
if((srcList[i].entity == entnum) && (srcList[i].channel == channel))
return i;
}
return -1;
}
#endif
/*
=================
S_AL_SrcLock
Locked sources will not be automatically reallocated or managed
=================
*/
static
void S_AL_SrcLock(srcHandle_t src)
{
srcList[src].isLocked = qtrue;
}
/*
=================
S_AL_SrcUnlock
Once unlocked, the source may be reallocated again
=================
*/
static
void S_AL_SrcUnlock(srcHandle_t src)
{
srcList[src].isLocked = qfalse;
}
/*
=================
S_AL_UpdateEntityPosition
=================
*/
static
void S_AL_UpdateEntityPosition( int entityNum, const vec3_t origin )
{
S_AL_SanitiseVector( (vec_t *)origin );
if ( entityNum < 0 || entityNum > MAX_GENTITIES )
Com_Error( ERR_DROP, "S_UpdateEntityPosition: bad entitynum %i", entityNum );
VectorCopy( origin, entityList[entityNum].origin );
}
/*
=================
S_AL_StartLocalSound
Play a local (non-spatialized) sound effect
=================
*/
static
void S_AL_StartLocalSound(sfxHandle_t sfx, int channel)
{
// Try to grab a source
srcHandle_t src = S_AL_SrcAlloc(SRCPRI_LOCAL, -1, channel);
if(src == -1)
return;
// Set up the effect
S_AL_SrcSetup(src, sfx, SRCPRI_LOCAL, -1, channel, qtrue);
// Start it playing
qalSourcePlay(srcList[src].alSource);
}
/*
=================
S_AL_StartSound
Play a one-shot sound effect
=================
*/
static
void S_AL_StartSound( vec3_t origin, int entnum, int entchannel, sfxHandle_t sfx )
{
vec3_t sorigin;
// Try to grab a source
srcHandle_t src = S_AL_SrcAlloc(SRCPRI_ONESHOT, entnum, entchannel);
if(src == -1)
return;
// Set up the effect
S_AL_SrcSetup(src, sfx, SRCPRI_ONESHOT, entnum, entchannel, qfalse);
if(origin == NULL)
{
srcList[src].isTracking = qtrue;
VectorCopy( entityList[entnum].origin, sorigin );
}
else
VectorCopy( origin, sorigin );
S_AL_SanitiseVector( sorigin );
qalSourcefv(srcList[src].alSource, AL_POSITION, sorigin);
// Start it playing
qalSourcePlay(srcList[src].alSource);
}
/*
=================
S_AL_ClearLoopingSounds
=================
*/
static
void S_AL_ClearLoopingSounds( qboolean killall )
{
int i;
for(i = 0; i < srcCount; i++)
{
if((srcList[i].isLooping) && (srcList[i].entity != -1))
entityList[srcList[i].entity].loopAddedThisFrame = qfalse;
}
}
/*
=================
S_AL_SrcLoop
=================
*/
static void S_AL_SrcLoop( alSrcPriority_t priority, sfxHandle_t sfx,
const vec3_t origin, const vec3_t velocity, int entityNum )
{
int src;
sentity_t *sent = &entityList[ entityNum ];
// Do we need to allocate a new source for this entity
if( !sent->srcAllocated )
{
// Try to get a channel
src = S_AL_SrcAlloc( priority, entityNum, -1 );
if( src == -1 )
{
Com_DPrintf( S_COLOR_YELLOW "WARNING: Failed to allocate source "
"for loop sfx %d on entity %d\n", sfx, entityNum );
return;
}
sent->startLoopingSound = qtrue;
}
else
src = sent->srcIndex;
sent->srcAllocated = qtrue;
sent->srcIndex = src;
sent->loopPriority = priority;
sent->loopSfx = sfx;
// If this is not set then the looping sound is removed
sent->loopAddedThisFrame = qtrue;
// UGH
// These lines should be called via S_AL_SrcSetup, but we
// can't call that yet as it buffers sfxes that may change
// with subsequent calls to S_AL_SrcLoop
srcList[ src ].entity = entityNum;
srcList[ src ].isLooping = qtrue;
srcList[ src ].isActive = qtrue;
// Set up the position and velocity
qalSourcefv( srcList[ src ].alSource, AL_POSITION, (ALfloat *)sent->origin );
qalSourcefv( srcList[ src ].alSource, AL_VELOCITY, (ALfloat *)velocity );
}
/*
=================
S_AL_AddLoopingSound
=================
*/
static
void S_AL_AddLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfx )
{
S_AL_SanitiseVector( (vec_t *)origin );
S_AL_SanitiseVector( (vec_t *)velocity );
S_AL_SrcLoop(SRCPRI_ENTITY, sfx, origin, velocity, entityNum);
}
/*
=================
S_AL_AddRealLoopingSound
=================
*/
static
void S_AL_AddRealLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfx )
{
S_AL_SanitiseVector( (vec_t *)origin );
S_AL_SanitiseVector( (vec_t *)velocity );
// There are certain maps (*cough* Q3:TA mpterra*) that have large quantities
// of ET_SPEAKERS in the PVS at any given time. OpenAL can't cope with mixing
// large numbers of sounds, so this culls them by distance
if( DistanceSquared( origin, lastListenerOrigin ) >
s_alMaxSpeakerDistance->value * s_alMaxSpeakerDistance->value )
return;
S_AL_SrcLoop(SRCPRI_AMBIENT, sfx, origin, velocity, entityNum);
}
/*
=================
S_AL_StopLoopingSound
=================
*/
static
void S_AL_StopLoopingSound(int entityNum )
{
if(entityList[entityNum].srcAllocated)
S_AL_SrcKill(entityList[entityNum].srcIndex);
}
/*
=================
S_AL_SrcUpdate
Update state (move things around, manage sources, and so on)
=================
*/
static
void S_AL_SrcUpdate( void )
{
int i;
int entityNum;
ALint state;
for(i = 0; i < srcCount; i++)
{
entityNum = srcList[i].entity;
if(srcList[i].isLocked)
continue;
if(!srcList[i].isActive)
continue;
// Update source parameters
if((s_alGain->modified)||(s_volume->modified))
qalSourcef(srcList[i].alSource, AL_GAIN, s_alGain->value * s_volume->value);
if((s_alRolloff->modified)&&(!srcList[i].local))
qalSourcef(srcList[i].alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
if(s_alMinDistance->modified)
qalSourcef(srcList[i].alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
if( srcList[ i ].isLooping )
{
sentity_t *sent = &entityList[ entityNum ];
// If a looping effect hasn't been touched this frame, kill it
if( sent->loopAddedThisFrame )
{
// The sound has changed without an intervening removal
if( srcList[ i ].isActive && !sent->startLoopingSound &&
srcList[ i ].sfx != sent->loopSfx )
{
qalSourceStop( srcList[ i ].alSource );
qalSourcei( srcList[ i ].alSource, AL_BUFFER, 0 );
sent->startLoopingSound = qtrue;
}
// Ths sound hasn't been started yet
if( sent->startLoopingSound )
{
S_AL_SrcSetup( i, sent->loopSfx, sent->loopPriority,
entityNum, -1, qfalse );
srcList[ i ].isLooping = qtrue;
qalSourcei( srcList[ i ].alSource, AL_LOOPING, AL_TRUE );
qalSourcePlay( srcList[ i ].alSource );
sent->startLoopingSound = qfalse;
}
}
else
S_AL_SrcKill( i );
continue;
}
// See if it needs to be moved
if(srcList[i].isTracking)
qalSourcefv(srcList[i].alSource, AL_POSITION, entityList[entityNum].origin);
// Check if it's done, and flag it
qalGetSourcei(srcList[i].alSource, AL_SOURCE_STATE, &state);
if(state == AL_STOPPED)
{
S_AL_SrcKill(i);
continue;
}
}
}
/*
=================
S_AL_SrcShutup
=================
*/
static
void S_AL_SrcShutup( void )
{
int i;
for(i = 0; i < srcCount; i++)
S_AL_SrcKill(i);
}
/*
=================
S_AL_SrcGet
=================
*/
static
ALuint S_AL_SrcGet(srcHandle_t src)
{
return srcList[src].alSource;
}
//===========================================================================
static srcHandle_t streamSourceHandle = -1;
static qboolean streamPlaying = qfalse;
static ALuint streamSource;
/*
=================
S_AL_AllocateStreamChannel
=================
*/
static void S_AL_AllocateStreamChannel( void )
{
// Allocate a streamSource at high priority
streamSourceHandle = S_AL_SrcAlloc(SRCPRI_STREAM, -2, 0);
if(streamSourceHandle == -1)
return;
// Lock the streamSource so nobody else can use it, and get the raw streamSource
S_AL_SrcLock(streamSourceHandle);
streamSource = S_AL_SrcGet(streamSourceHandle);
// Set some streamSource parameters
qalSourcei (streamSource, AL_BUFFER, 0 );
qalSourcei (streamSource, AL_LOOPING, AL_FALSE );
qalSource3f(streamSource, AL_POSITION, 0.0, 0.0, 0.0);
qalSource3f(streamSource, AL_VELOCITY, 0.0, 0.0, 0.0);
qalSource3f(streamSource, AL_DIRECTION, 0.0, 0.0, 0.0);
qalSourcef (streamSource, AL_ROLLOFF_FACTOR, 0.0 );
qalSourcei (streamSource, AL_SOURCE_RELATIVE, AL_TRUE );
}
/*
=================
S_AL_FreeStreamChannel
=================
*/
static void S_AL_FreeStreamChannel( void )
{
// Release the output streamSource
S_AL_SrcUnlock(streamSourceHandle);
streamSource = 0;
streamSourceHandle = -1;
}
/*
=================
S_AL_RawSamples
=================
*/
static
void S_AL_RawSamples(int samples, int rate, int width, int channels, const byte *data, float volume)
{
ALuint buffer;
ALuint format;
format = S_AL_Format( width, channels );
// Create the streamSource if necessary
if(streamSourceHandle == -1)
{
S_AL_AllocateStreamChannel();
// Failed?
if(streamSourceHandle == -1)
{
Com_Printf( S_COLOR_RED "ERROR: Can't allocate streaming streamSource\n");
return;
}
}
// Create a buffer, and stuff the data into it
qalGenBuffers(1, &buffer);
qalBufferData(buffer, format, (ALvoid *)data, (samples * width * channels), rate);
// Shove the data onto the streamSource
qalSourceQueueBuffers(streamSource, 1, &buffer);
// Volume
qalSourcef (streamSource, AL_GAIN, volume * s_volume->value * s_alGain->value);
}
/*
=================
S_AL_StreamUpdate
=================
*/
static
void S_AL_StreamUpdate( void )
{
int numBuffers;
ALint state;
if(streamSourceHandle == -1)
return;
// Un-queue any buffers, and delete them
qalGetSourcei( streamSource, AL_BUFFERS_PROCESSED, &numBuffers );
while( numBuffers-- )
{
ALuint buffer;
qalSourceUnqueueBuffers(streamSource, 1, &buffer);
qalDeleteBuffers(1, &buffer);
}
// Start the streamSource playing if necessary
qalGetSourcei( streamSource, AL_BUFFERS_QUEUED, &numBuffers );
qalGetSourcei(streamSource, AL_SOURCE_STATE, &state);
if(state == AL_STOPPED)
{
streamPlaying = qfalse;
// If there are no buffers queued up, release the streamSource
if( !numBuffers )
S_AL_FreeStreamChannel( );
}
if( !streamPlaying && numBuffers )
{
qalSourcePlay( streamSource );
streamPlaying = qtrue;
}
}
/*
=================
S_AL_StreamDie
=================
*/
static
void S_AL_StreamDie( void )
{
if(streamSourceHandle == -1)
return;
streamPlaying = qfalse;
qalSourceStop(streamSource);
S_AL_FreeStreamChannel();
}
//===========================================================================
#define NUM_MUSIC_BUFFERS 4
#define MUSIC_BUFFER_SIZE 4096
static qboolean musicPlaying = qfalse;
static srcHandle_t musicSourceHandle = -1;
static ALuint musicSource;
static ALuint musicBuffers[NUM_MUSIC_BUFFERS];
static snd_stream_t *mus_stream;
static char s_backgroundLoop[MAX_QPATH];
static byte decode_buffer[MUSIC_BUFFER_SIZE];
/*
=================
S_AL_MusicSourceGet
=================
*/
static void S_AL_MusicSourceGet( void )
{
// Allocate a musicSource at high priority
musicSourceHandle = S_AL_SrcAlloc(SRCPRI_STREAM, -2, 0);
if(musicSourceHandle == -1)
return;
// Lock the musicSource so nobody else can use it, and get the raw musicSource
S_AL_SrcLock(musicSourceHandle);
musicSource = S_AL_SrcGet(musicSourceHandle);
// Set some musicSource parameters
qalSource3f(musicSource, AL_POSITION, 0.0, 0.0, 0.0);
qalSource3f(musicSource, AL_VELOCITY, 0.0, 0.0, 0.0);
qalSource3f(musicSource, AL_DIRECTION, 0.0, 0.0, 0.0);
qalSourcef (musicSource, AL_ROLLOFF_FACTOR, 0.0 );
qalSourcei (musicSource, AL_SOURCE_RELATIVE, AL_TRUE );
}
/*
=================
S_AL_MusicSourceFree
=================
*/
static void S_AL_MusicSourceFree( void )
{
// Release the output musicSource
S_AL_SrcUnlock(musicSourceHandle);
musicSource = 0;
musicSourceHandle = -1;
}
/*
=================
S_AL_StopBackgroundTrack
=================
*/
static
void S_AL_StopBackgroundTrack( void )
{
if(!musicPlaying)
return;
// Stop playing
qalSourceStop(musicSource);
// De-queue the musicBuffers
qalSourceUnqueueBuffers(musicSource, NUM_MUSIC_BUFFERS, musicBuffers);
// Destroy the musicBuffers
qalDeleteBuffers(NUM_MUSIC_BUFFERS, musicBuffers);
// Free the musicSource
S_AL_MusicSourceFree();
// Unload the stream
if(mus_stream)
S_CodecCloseStream(mus_stream);
mus_stream = NULL;
musicPlaying = qfalse;
}
/*
=================
S_AL_MusicProcess
=================
*/
static
void S_AL_MusicProcess(ALuint b)
{
ALenum error;
int l;
ALuint format;
l = S_CodecReadStream(mus_stream, MUSIC_BUFFER_SIZE, decode_buffer);
// Run out data to read, start at the beginning again
if(l == 0)
{
S_CodecCloseStream(mus_stream);
mus_stream = S_CodecOpenStream(s_backgroundLoop);
if(!mus_stream)
{
S_AL_StopBackgroundTrack();
return;
}
l = S_CodecReadStream(mus_stream, MUSIC_BUFFER_SIZE, decode_buffer);
}
format = S_AL_Format(mus_stream->info.width, mus_stream->info.channels);
if( l == 0 )
{
// We have no data to buffer, so buffer silence
byte dummyData[ 2 ] = { 0 };
qalBufferData( b, AL_FORMAT_MONO16, (void *)dummyData, 2, 22050 );
}
else
qalBufferData(b, format, decode_buffer, l, mus_stream->info.rate);
if( ( error = qalGetError( ) ) != AL_NO_ERROR )
{
S_AL_StopBackgroundTrack( );
Com_Printf( S_COLOR_RED "ERROR: while buffering data for music stream - %s\n",
S_AL_ErrorMsg( error ) );
return;
}
}
/*
=================
S_AL_StartBackgroundTrack
=================
*/
static
void S_AL_StartBackgroundTrack( const char *intro, const char *loop )
{
int i;
// Stop any existing music that might be playing
S_AL_StopBackgroundTrack();
if ( !intro || !intro[0] ) {
intro = loop;
}
if ( !loop || !loop[0] ) {
loop = intro;
}
if((!intro || !intro[0]) && (!intro || !intro[0]))
return;
// Copy the loop over
strncpy( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
// Open the intro
mus_stream = S_CodecOpenStream(intro);
if(!mus_stream)
return;
// Allocate a musicSource
S_AL_MusicSourceGet();
if(musicSourceHandle == -1)
return;
// Generate the musicBuffers
qalGenBuffers(NUM_MUSIC_BUFFERS, musicBuffers);
// Queue the musicBuffers up
for(i = 0; i < NUM_MUSIC_BUFFERS; i++)
S_AL_MusicProcess(musicBuffers[i]);
qalSourceQueueBuffers(musicSource, NUM_MUSIC_BUFFERS, musicBuffers);
// Set the initial gain property
qalSourcef(musicSource, AL_GAIN, s_alGain->value * s_musicVolume->value);
// Start playing
qalSourcePlay(musicSource);
musicPlaying = qtrue;
}
/*
=================
S_AL_MusicUpdate
=================
*/
static
void S_AL_MusicUpdate( void )
{
int numBuffers;
ALint state;
if(!musicPlaying)
return;
qalGetSourcei( musicSource, AL_BUFFERS_PROCESSED, &numBuffers );
while( numBuffers-- )
{
ALuint b;
qalSourceUnqueueBuffers(musicSource, 1, &b);
S_AL_MusicProcess(b);
qalSourceQueueBuffers(musicSource, 1, &b);
}
// Hitches can cause OpenAL to be starved of buffers when streaming.
// If this happens, it will stop playback. This restarts the source if
// it is no longer playing, and if there are buffers available
qalGetSourcei( musicSource, AL_SOURCE_STATE, &state );
qalGetSourcei( musicSource, AL_BUFFERS_QUEUED, &numBuffers );
if( state == AL_STOPPED && numBuffers )
{
Com_DPrintf( S_COLOR_YELLOW "Restarted OpenAL music\n" );
qalSourcePlay(musicSource);
}
// Set the gain property
qalSourcef(musicSource, AL_GAIN, s_alGain->value * s_musicVolume->value);
}
//===========================================================================
// Local state variables
static ALCdevice *alDevice;
static ALCcontext *alContext;
#ifdef _WIN32
#define ALDRIVER_DEFAULT "OpenAL32.dll"
#else
#define ALDRIVER_DEFAULT "libopenal.so.0"
#endif
/*
=================
S_AL_StopAllSounds
=================
*/
static
void S_AL_StopAllSounds( void )
{
S_AL_SrcShutup();
S_AL_StopBackgroundTrack();
}
/*
=================
S_AL_Respatialize
=================
*/
static
void S_AL_Respatialize( int entityNum, const vec3_t origin, vec3_t axis[3], int inwater )
{
float velocity[3] = {0.0f, 0.0f, 0.0f};
float orientation[6];
vec3_t sorigin;
if( s_alSpatEntOrigin->integer && entityNum >= 0 )
VectorCopy( entityList[ entityNum ].origin, sorigin );
else
{
VectorCopy( origin, sorigin );
S_AL_SanitiseVector( sorigin );
}
S_AL_SanitiseVector( axis[ 0 ] );
S_AL_SanitiseVector( axis[ 1 ] );
S_AL_SanitiseVector( axis[ 2 ] );
orientation[0] = axis[0][0]; orientation[1] = axis[0][1]; orientation[2] = axis[0][2];
orientation[3] = axis[2][0]; orientation[4] = axis[2][1]; orientation[5] = axis[2][2];
VectorCopy( sorigin, lastListenerOrigin );
// Set OpenAL listener paramaters
qalListenerfv(AL_POSITION, (ALfloat *)sorigin);
qalListenerfv(AL_VELOCITY, velocity);
qalListenerfv(AL_ORIENTATION, orientation);
}
/*
=================
S_AL_Update
=================
*/
static
void S_AL_Update( void )
{
// Update SFX channels
S_AL_SrcUpdate();
// Update streams
S_AL_StreamUpdate();
S_AL_MusicUpdate();
// Doppler
if(s_doppler->modified)
{
s_alDopplerFactor->modified = qtrue;
s_doppler->modified = qfalse;
}
// Doppler parameters
if(s_alDopplerFactor->modified)
{
if(s_doppler->integer)
qalDopplerFactor(s_alDopplerFactor->value);
else
qalDopplerFactor(0.0f);
s_alDopplerFactor->modified = qfalse;
}
if(s_alDopplerSpeed->modified)
{
qalDopplerVelocity(s_alDopplerSpeed->value);
s_alDopplerSpeed->modified = qfalse;
}
// Clear the modified flags on the other cvars
s_alGain->modified = qfalse;
s_volume->modified = qfalse;
s_musicVolume->modified = qfalse;
s_alMinDistance->modified = qfalse;
s_alRolloff->modified = qfalse;
}
/*
=================
S_AL_DisableSounds
=================
*/
static
void S_AL_DisableSounds( void )
{
S_AL_StopAllSounds();
}
/*
=================
S_AL_BeginRegistration
=================
*/
static
void S_AL_BeginRegistration( void )
{
}
/*
=================
S_AL_ClearSoundBuffer
=================
*/
static
void S_AL_ClearSoundBuffer( void )
{
}
/*
=================
S_AL_SoundList
=================
*/
static
void S_AL_SoundList( void )
{
}
/*
=================
S_AL_SoundInfo
=================
*/
static
void S_AL_SoundInfo( void )
{
Com_Printf( "OpenAL info:\n" );
Com_Printf( " Vendor: %s\n", qalGetString( AL_VENDOR ) );
Com_Printf( " Version: %s\n", qalGetString( AL_VERSION ) );
Com_Printf( " Renderer: %s\n", qalGetString( AL_RENDERER ) );
Com_Printf( " Extensions: %s\n", qalGetString( AL_EXTENSIONS ) );
}
/*
=================
S_AL_Shutdown
=================
*/
static
void S_AL_Shutdown( void )
{
// Shut down everything
S_AL_StreamDie( );
S_AL_StopBackgroundTrack( );
S_AL_SrcShutdown( );
S_AL_BufferShutdown( );
// Check for Linux shutdown race condition
// FIXME: this will probably not be necessary once OpenAL CVS
// from 11/11/05 is released and prevelant
if( Q_stricmp((const char*)qalGetString( AL_VENDOR ), "J. Valenzuela" ) ) {
qalcMakeContextCurrent( NULL );
}
qalcDestroyContext(alContext);
qalcCloseDevice(alDevice);
QAL_Shutdown();
}
#endif
/*
=================
S_AL_Init
=================
*/
qboolean S_AL_Init( soundInterface_t *si )
{
#if USE_OPENAL
if( !si ) {
return qfalse;
}
// New console variables
s_alPrecache = Cvar_Get( "s_alPrecache", "1", CVAR_ARCHIVE );
s_alGain = Cvar_Get( "s_alGain", "0.4", CVAR_ARCHIVE );
s_alSources = Cvar_Get( "s_alSources", "96", CVAR_ARCHIVE );
s_alDopplerFactor = Cvar_Get( "s_alDopplerFactor", "1.0", CVAR_ARCHIVE );
s_alDopplerSpeed = Cvar_Get( "s_alDopplerSpeed", "2200", CVAR_ARCHIVE );
s_alMinDistance = Cvar_Get( "s_alMinDistance", "120", CVAR_CHEAT );
s_alRolloff = Cvar_Get( "s_alRolloff", "0.8", CVAR_CHEAT );
s_alMaxSpeakerDistance = Cvar_Get( "s_alMaxSpeakerDistance", "1024", CVAR_ARCHIVE );
s_alSpatEntOrigin = Cvar_Get( "s_alSpatEntOrigin", "0", CVAR_ARCHIVE );
s_alDriver = Cvar_Get( "s_alDriver", ALDRIVER_DEFAULT, CVAR_ARCHIVE );
// Load QAL
if( !QAL_Init( s_alDriver->string ) )
{
Com_Printf( "Failed to load library: \"%s\".\n", s_alDriver->string );
return qfalse;
}
// Open default device
alDevice = qalcOpenDevice( NULL );
if( !alDevice )
{
QAL_Shutdown( );
Com_Printf( "Failed to open OpenAL device.\n" );
return qfalse;
}
// Create OpenAL context
alContext = qalcCreateContext( alDevice, NULL );
if( !alContext )
{
QAL_Shutdown( );
qalcCloseDevice( alDevice );
Com_Printf( "Failed to create OpenAL context.\n" );
return qfalse;
}
qalcMakeContextCurrent( alContext );
// Initialize sources, buffers, music
S_AL_BufferInit( );
S_AL_SrcInit( );
// Set up OpenAL parameters (doppler, etc)
qalDopplerFactor( s_alDopplerFactor->value );
qalDopplerVelocity( s_alDopplerSpeed->value );
si->Shutdown = S_AL_Shutdown;
si->StartSound = S_AL_StartSound;
si->StartLocalSound = S_AL_StartLocalSound;
si->StartBackgroundTrack = S_AL_StartBackgroundTrack;
si->StopBackgroundTrack = S_AL_StopBackgroundTrack;
si->RawSamples = S_AL_RawSamples;
si->StopAllSounds = S_AL_StopAllSounds;
si->ClearLoopingSounds = S_AL_ClearLoopingSounds;
si->AddLoopingSound = S_AL_AddLoopingSound;
si->AddRealLoopingSound = S_AL_AddRealLoopingSound;
si->StopLoopingSound = S_AL_StopLoopingSound;
si->Respatialize = S_AL_Respatialize;
si->UpdateEntityPosition = S_AL_UpdateEntityPosition;
si->Update = S_AL_Update;
si->DisableSounds = S_AL_DisableSounds;
si->BeginRegistration = S_AL_BeginRegistration;
si->RegisterSound = S_AL_RegisterSound;
si->ClearSoundBuffer = S_AL_ClearSoundBuffer;
si->SoundInfo = S_AL_SoundInfo;
si->SoundList = S_AL_SoundList;
return qtrue;
#else
return qfalse;
#endif
}
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