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ioq3/code/client/snd_openal.c

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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"
#ifdef 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_alMaxDistance;
cvar_t *s_alRolloff;
cvar_t *s_alGraceDistance;
cvar_t *s_alDriver;
cvar_t *s_alDevice;
cvar_t *s_alInputDevice;
cvar_t *s_alAvailableDevices;
cvar_t *s_alAvailableInputDevices;
static qboolean enumeration_ext = qfalse;
static qboolean enumeration_all_ext = qfalse;
static qboolean capture_ext = qfalse;
/*
=================
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";
}
}
/*
=================
S_AL_ClearError
=================
*/
static void S_AL_ClearError( qboolean quiet )
{
int error = qalGetError();
if( quiet )
return;
if(error != AL_NO_ERROR)
{
Com_Printf(S_COLOR_YELLOW "WARNING: unhandled AL error: %s\n",
S_AL_ErrorMsg(error));
}
}
//===========================================================================
typedef struct alSfx_s
{
char filename[MAX_QPATH];
ALuint buffer; // OpenAL buffer
snd_info_t info; // information for this sound like rate, sample count..
qboolean isDefault; // Couldn't be loaded - use default FX
qboolean isDefaultChecked; // Sound has been check if it isDefault
qboolean inMemory; // Sound is stored in memory
qboolean isLocked; // Sound is locked (can not be unloaded)
int lastUsedTime; // Time last used
int loopCnt; // number of loops using this sfx
int loopActiveCnt; // number of playing loops using this sfx
int masterLoopSrc; // All other sources looping this buffer are synced to this master src
} alSfx_t;
static qboolean alBuffersInitialised = qfalse;
// Sound effect storage, data structures
#define MAX_SFX 4096
static alSfx_t knownSfx[MAX_SFX];
static sfxHandle_t 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')
{
if(i >= numSfx)
numSfx = i + 1;
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 < numSfx; 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));
ptr->masterLoopSrc = -1;
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", 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
S_AL_ClearError( qfalse );
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 < numSfx; 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, qboolean cache)
{
ALenum error;
ALuint format;
void *data;
snd_info_t info;
alSfx_t *curSfx = &knownSfx[sfx];
// Nothing?
if(curSfx->filename[0] == '\0')
return;
// Player SFX
if(curSfx->filename[0] == '*')
return;
// Already done?
if((curSfx->inMemory) || (curSfx->isDefault) || (!cache && curSfx->isDefaultChecked))
return;
// Try to load
data = S_CodecLoad(curSfx->filename, &info);
if(!data)
{
S_AL_BufferUseDefault(sfx);
return;
}
curSfx->isDefaultChecked = qtrue;
if (!cache)
{
// Don't create AL cache
Hunk_FreeTempMemory(data);
return;
}
format = S_AL_Format(info.width, info.channels);
// Create a buffer
S_AL_ClearError( qfalse );
qalGenBuffers(1, &curSfx->buffer);
if((error = qalGetError()) != AL_NO_ERROR)
{
S_AL_BufferUseDefault(sfx);
Hunk_FreeTempMemory(data);
Com_Printf( S_COLOR_RED "ERROR: Can't create a sound buffer for %s - %s\n",
curSfx->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(curSfx->buffer, AL_FORMAT_MONO16, (void *)dummyData, 2, 22050);
}
else
qalBufferData(curSfx->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);
Hunk_FreeTempMemory(data);
Com_Printf( S_COLOR_RED "ERROR: Out of memory loading %s\n", curSfx->filename);
return;
}
// Try load it again
qalBufferData(curSfx->buffer, format, data, info.size, info.rate);
error = qalGetError();
}
// Some other error condition
if(error != AL_NO_ERROR)
{
S_AL_BufferUseDefault(sfx);
Hunk_FreeTempMemory(data);
Com_Printf( S_COLOR_RED "ERROR: Can't fill sound buffer for %s - %s\n",
curSfx->filename, S_AL_ErrorMsg(error));
return;
}
curSfx->info = info;
// Free the memory
Hunk_FreeTempMemory(data);
// Woo!
curSfx->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, qtrue);
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 < numSfx; i++)
S_AL_BufferUnload(i);
// Clear the tables
numSfx = 0;
// 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((!knownSfx[sfx].inMemory) && (!knownSfx[sfx].isDefault))
S_AL_BufferLoad(sfx, s_alPrecache->integer);
knownSfx[sfx].lastUsedTime = Com_Milliseconds();
if (knownSfx[sfx].isDefault) {
return 0;
}
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)
qboolean isActive; // Is this source currently in use?
qboolean isPlaying; // Is this source currently playing, or stopped?
qboolean isLocked; // This is locked (un-allocatable)
qboolean isLooping; // Is this a looping effect (attached to an entity)
qboolean isTracking; // Is this object tracking its owner
float curGain; // gain employed if source is within maxdistance.
float scaleGain; // Last gain value for this source. 0 if muted.
float lastTimePos; // On stopped loops, the last position in the buffer
int lastSampleTime; // Time when this was stopped
vec3_t loopSpeakerPos; // Origin of the loop speaker
qboolean local; // Is this local (relative to the cam)
} src_t;
#ifdef MACOS_X
#define MAX_SRC 64
#else
#define MAX_SRC 128
#endif
static src_t srcList[MAX_SRC];
static int srcCount = 0;
static int srcActiveCnt = 0;
static qboolean alSourcesInitialised = qfalse;
static vec3_t lastListenerOrigin = { 0.0f, 0.0f, 0.0f };
typedef struct sentity_s
{
vec3_t origin;
qboolean 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 );
}
}
#define AL_THIRD_PERSON_THRESHOLD_SQ (48.0f*48.0f)
/*
=================
S_AL_Gain
Set gain to 0 if muted, otherwise set it to given value.
=================
*/
static void S_AL_Gain(ALuint source, float gainval)
{
if(s_muted->integer)
qalSourcef(source, AL_GAIN, 0.0f);
else
qalSourcef(source, AL_GAIN, gainval);
}
/*
=================
S_AL_ScaleGain
Adapt the gain if necessary to get a quicker fadeout when the source is too far away.
=================
*/
static void S_AL_ScaleGain(src_t *chksrc, vec3_t origin)
{
float distance;
if(!chksrc->local)
distance = Distance(origin, lastListenerOrigin);
// If we exceed a certain distance, scale the gain linearly until the sound
// vanishes into nothingness.
if(!chksrc->local && (distance -= s_alMaxDistance->value) > 0)
{
float scaleFactor;
if(distance >= s_alGraceDistance->value)
scaleFactor = 0.0f;
else
scaleFactor = 1.0f - distance / s_alGraceDistance->value;
scaleFactor *= chksrc->curGain;
if(chksrc->scaleGain != scaleFactor)
{
chksrc->scaleGain = scaleFactor;
S_AL_Gain(chksrc->alSource, chksrc->scaleGain);
}
}
else if(chksrc->scaleGain != chksrc->curGain)
{
chksrc->scaleGain = chksrc->curGain;
S_AL_Gain(chksrc->alSource, chksrc->scaleGain);
}
}
/*
=================
S_AL_HearingThroughEntity
=================
*/
static qboolean S_AL_HearingThroughEntity( int entityNum )
{
float distanceSq;
if( clc.clientNum == entityNum )
{
// FIXME: <tim@ngus.net> 28/02/06 This is an outrageous hack to detect
// whether or not the player is rendering in third person or not. We can't
// ask the renderer because the renderer has no notion of entities and we
// can't ask cgame since that would involve changing the API and hence mod
// compatibility. I don't think there is any way around this, but I'll leave
// the FIXME just in case anyone has a bright idea.
distanceSq = DistanceSquared(
entityList[ entityNum ].origin,
lastListenerOrigin );
if( distanceSq > AL_THIRD_PERSON_THRESHOLD_SQ )
return qfalse; //we're the player, but third person
else
return qtrue; //we're the player
}
else
return qfalse; //not the player
}
/*
=================
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;
srcActiveCnt = 0;
// Cap s_alSources to MAX_SRC
limit = s_alSources->integer;
if(limit > MAX_SRC)
limit = MAX_SRC;
else if(limit < 16)
limit = 16;
S_AL_ClearError( qfalse );
// 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;
src_t *curSource;
if(!alSourcesInitialised)
return;
// Destroy all the sources
for(i = 0; i < srcCount; i++)
{
curSource = &srcList[i];
if(curSource->isLocked)
Com_DPrintf( S_COLOR_YELLOW "WARNING: Source %d is locked\n", i);
if(curSource->entity > 0)
entityList[curSource->entity].srcAllocated = qfalse;
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;
src_t *curSource;
// Mark the SFX as used, and grab the raw AL buffer
S_AL_BufferUse(sfx);
buffer = S_AL_BufferGet(sfx);
// Set up src struct
curSource = &srcList[src];
curSource->lastUsedTime = Sys_Milliseconds();
curSource->sfx = sfx;
curSource->priority = priority;
curSource->entity = entity;
curSource->channel = channel;
curSource->isPlaying = qfalse;
curSource->isLocked = qfalse;
curSource->isLooping = qfalse;
curSource->isTracking = qfalse;
curSource->curGain = s_alGain->value * s_volume->value;
curSource->scaleGain = curSource->curGain;
curSource->local = local;
// Set up OpenAL source
qalSourcei(curSource->alSource, AL_BUFFER, buffer);
qalSourcef(curSource->alSource, AL_PITCH, 1.0f);
S_AL_Gain(curSource->alSource, curSource->curGain);
qalSourcefv(curSource->alSource, AL_POSITION, vec3_origin);
qalSourcefv(curSource->alSource, AL_VELOCITY, vec3_origin);
qalSourcei(curSource->alSource, AL_LOOPING, AL_FALSE);
qalSourcef(curSource->alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
if(local)
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_TRUE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, 0.0f);
}
else
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_FALSE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
}
}
/*
=================
S_AL_NewLoopMaster
Remove given source as loop master if it is the master and hand off master status to another source in this case.
=================
*/
static void S_AL_SaveLoopPos(src_t *dest, ALuint alSource)
{
int error;
S_AL_ClearError(qfalse);
qalGetSourcef(alSource, AL_SEC_OFFSET, &dest->lastTimePos);
if((error = qalGetError()) != AL_NO_ERROR)
{
// Old OpenAL implementations don't support AL_SEC_OFFSET
if(error != AL_INVALID_ENUM)
{
Com_Printf(S_COLOR_YELLOW "WARNING: Could not get time offset for alSource %d: %s\n",
alSource, S_AL_ErrorMsg(error));
}
dest->lastTimePos = -1;
}
else
dest->lastSampleTime = Sys_Milliseconds();
}
/*
=================
S_AL_NewLoopMaster
Remove given source as loop master if it is the master and hand off master status to another source in this case.
=================
*/
static void S_AL_NewLoopMaster(src_t *rmSource, qboolean iskilled)
{
int index;
src_t *curSource = NULL;
alSfx_t *curSfx;
curSfx = &knownSfx[rmSource->sfx];
if(rmSource->isPlaying)
curSfx->loopActiveCnt--;
if(iskilled)
curSfx->loopCnt--;
if(curSfx->loopCnt)
{
if(rmSource->priority == SRCPRI_ENTITY)
{
if(!iskilled && rmSource->isPlaying)
{
// only sync ambient loops...
// It makes more sense to have sounds for weapons/projectiles unsynced
S_AL_SaveLoopPos(rmSource, rmSource->alSource);
}
}
else if(rmSource == &srcList[curSfx->masterLoopSrc])
{
int firstInactive = -1;
// Only if rmSource was the master and if there are still playing loops for
// this sound will we need to find a new master.
if(iskilled || curSfx->loopActiveCnt)
{
for(index = 0; index < srcCount; index++)
{
curSource = &srcList[index];
if(curSource->sfx == rmSource->sfx && curSource != rmSource &&
curSource->isActive && curSource->isLooping && curSource->priority == SRCPRI_AMBIENT)
{
if(curSource->isPlaying)
{
curSfx->masterLoopSrc = index;
break;
}
else if(firstInactive < 0)
firstInactive = index;
}
}
}
if(!curSfx->loopActiveCnt)
{
if(firstInactive < 0)
{
if(iskilled)
{
curSfx->masterLoopSrc = -1;
return;
}
else
curSource = rmSource;
}
else
curSource = &srcList[firstInactive];
if(rmSource->isPlaying)
{
// this was the last not stopped source, save last sample position + time
S_AL_SaveLoopPos(curSource, rmSource->alSource);
}
else
{
// second case: all loops using this sound have stopped due to listener being of of range,
// and now the inactive master gets deleted. Just move over the soundpos settings to the
// new master.
curSource->lastTimePos = rmSource->lastTimePos;
curSource->lastSampleTime = rmSource->lastSampleTime;
}
}
}
}
else
curSfx->masterLoopSrc = -1;
}
/*
=================
S_AL_SrcKill
=================
*/
static void S_AL_SrcKill(srcHandle_t src)
{
src_t *curSource = &srcList[src];
// I'm not touching it. Unlock it first.
if(curSource->isLocked)
return;
// Remove the entity association and loop master status
if(curSource->isLooping)
{
curSource->isLooping = qfalse;
if(curSource->entity != -1)
{
sentity_t *curEnt = &entityList[curSource->entity];
curEnt->srcAllocated = qfalse;
curEnt->srcIndex = -1;
curEnt->loopAddedThisFrame = qfalse;
curEnt->startLoopingSound = qfalse;
}
S_AL_NewLoopMaster(curSource, qtrue);
}
// Stop it if it's playing
if(curSource->isPlaying)
{
qalSourceStop(curSource->alSource);
curSource->isPlaying = qfalse;
}
// Remove the buffer
qalSourcei(curSource->alSource, AL_BUFFER, 0);
curSource->sfx = 0;
curSource->lastUsedTime = 0;
curSource->priority = 0;
curSource->entity = -1;
curSource->channel = -1;
if(curSource->isActive)
{
curSource->isActive = qfalse;
srcActiveCnt--;
}
curSource->isLocked = qfalse;
curSource->isTracking = qfalse;
curSource->local = 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;
float weakest_gain = 1000.0;
qboolean weakest_isplaying = qtrue;
int weakest_numloops = 0;
src_t *curSource;
for(i = 0; i < srcCount; i++)
{
curSource = &srcList[i];
// If it's locked, we aren't even going to look at it
if(curSource->isLocked)
continue;
// Is it empty or not?
if(!curSource->isActive)
{
empty = i;
break;
}
if(curSource->isPlaying)
{
if(weakest_isplaying && curSource->priority < priority &&
(curSource->priority < weakest_pri ||
(!curSource->isLooping && (curSource->scaleGain < weakest_gain || curSource->lastUsedTime < weakest_time))))
{
// If it has lower priority, is fainter or older, flag it as weak
// the last two values are only compared if it's not a looping sound, because we want to prevent two
// loops (loops are added EVERY frame) fighting for a slot
weakest_pri = curSource->priority;
weakest_time = curSource->lastUsedTime;
weakest_gain = curSource->scaleGain;
weakest = i;
}
}
else
{
weakest_isplaying = qfalse;
if(weakest < 0 ||
knownSfx[curSource->sfx].loopCnt > weakest_numloops ||
curSource->priority < weakest_pri ||
curSource->lastUsedTime < weakest_time)
{
// Sources currently not playing of course have lowest priority
// also try to always keep at least one loop master for every loop sound
weakest_pri = curSource->priority;
weakest_time = curSource->lastUsedTime;
weakest_numloops = knownSfx[curSource->sfx].loopCnt;
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((curSource->entity == entnum) && (curSource->channel == channel) && (channel != 0))
{
S_AL_SrcKill(i);
return i;
}
#endif
}
if(empty == -1)
empty = weakest;
if(empty >= 0)
{
S_AL_SrcKill(empty);
srcList[empty].isActive = qtrue;
srcActiveCnt++;
}
return empty;
}
/*
=================
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 )
{
vec3_t sanOrigin;
VectorCopy( origin, sanOrigin );
S_AL_SanitiseVector( sanOrigin );
if ( entityNum < 0 || entityNum > MAX_GENTITIES )
Com_Error( ERR_DROP, "S_UpdateEntityPosition: bad entitynum %i", entityNum );
VectorCopy( sanOrigin, entityList[entityNum].origin );
}
/*
=================
S_AL_CheckInput
Check whether input values from mods are out of range.
Necessary for i.g. Western Quake3 mod which is buggy.
=================
*/
static qboolean S_AL_CheckInput(int entityNum, sfxHandle_t sfx)
{
if (entityNum < 0 || entityNum > MAX_GENTITIES)
Com_Error(ERR_DROP, "ERROR: S_AL_CheckInput: bad entitynum %i", entityNum);
if (sfx < 0 || sfx >= numSfx)
{
Com_Printf(S_COLOR_RED "ERROR: S_AL_CheckInput: handle %i out of range\n", sfx);
return qtrue;
}
return qfalse;
}
/*
=================
S_AL_StartLocalSound
Play a local (non-spatialized) sound effect
=================
*/
static
void S_AL_StartLocalSound(sfxHandle_t sfx, int channel)
{
srcHandle_t src;
if(S_AL_CheckInput(0, sfx))
return;
// Try to grab a source
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
srcList[src].isPlaying = qtrue;
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;
srcHandle_t src;
src_t *curSource;
if(origin)
{
if(S_AL_CheckInput(0, sfx))
return;
VectorCopy(origin, sorigin);
}
else
{
if(S_AL_CheckInput(entnum, sfx))
return;
if(S_AL_HearingThroughEntity(entnum))
{
S_AL_StartLocalSound(sfx, entchannel);
return;
}
VectorCopy(entityList[entnum].origin, sorigin);
}
S_AL_SanitiseVector(sorigin);
if((srcActiveCnt > 5 * srcCount / 3) &&
(DistanceSquared(sorigin, lastListenerOrigin) >=
(s_alMaxDistance->value + s_alGraceDistance->value) * (s_alMaxDistance->value + s_alGraceDistance->value)))
{
// We're getting tight on sources and source is not within hearing distance so don't add it
return;
}
// Try to grab a source
src = S_AL_SrcAlloc(SRCPRI_ONESHOT, entnum, entchannel);
if(src == -1)
return;
S_AL_SrcSetup(src, sfx, SRCPRI_ONESHOT, entnum, entchannel, qfalse);
curSource = &srcList[src];
if(!origin)
curSource->isTracking = qtrue;
qalSourcefv(curSource->alSource, AL_POSITION, sorigin );
S_AL_ScaleGain(curSource, sorigin);
// Start it playing
curSource->isPlaying = qtrue;
qalSourcePlay(curSource->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 ];
src_t *curSource;
vec3_t sorigin, svelocity;
if(S_AL_CheckInput(entityNum, sfx))
return;
// 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;
}
curSource = &srcList[src];
sent->startLoopingSound = qtrue;
curSource->lastTimePos = -1.0;
curSource->lastSampleTime = Sys_Milliseconds();
}
else
{
src = sent->srcIndex;
curSource = &srcList[src];
}
sent->srcAllocated = qtrue;
sent->srcIndex = src;
sent->loopPriority = priority;
sent->loopSfx = sfx;
// If this is not set then the looping sound is stopped.
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
curSource->entity = entityNum;
curSource->isLooping = qtrue;
if( S_AL_HearingThroughEntity( entityNum ) )
{
curSource->local = qtrue;
VectorClear(sorigin);
qalSourcefv(curSource->alSource, AL_POSITION, sorigin);
qalSourcefv(curSource->alSource, AL_VELOCITY, sorigin);
}
else
{
curSource->local = qfalse;
if(origin)
VectorCopy(origin, sorigin);
else
VectorCopy(sent->origin, sorigin);
S_AL_SanitiseVector(sorigin);
VectorCopy(sorigin, curSource->loopSpeakerPos);
if(velocity)
{
VectorCopy(velocity, svelocity);
S_AL_SanitiseVector(svelocity);
}
else
VectorClear(svelocity);
qalSourcefv( curSource->alSource, AL_POSITION, (ALfloat *)sorigin );
qalSourcefv( curSource->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_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_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;
src_t *curSource;
for(i = 0; i < srcCount; i++)
{
entityNum = srcList[i].entity;
curSource = &srcList[i];
if(curSource->isLocked)
continue;
if(!curSource->isActive)
continue;
// Update source parameters
if((s_alGain->modified) || (s_volume->modified))
curSource->curGain = s_alGain->value * s_volume->value;
if((s_alRolloff->modified) && (!curSource->local))
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
if(s_alMinDistance->modified)
qalSourcef(curSource->alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
if(curSource->isLooping)
{
sentity_t *sent = &entityList[ entityNum ];
// If a looping effect hasn't been touched this frame, pause or kill it
if(sent->loopAddedThisFrame)
{
alSfx_t *curSfx;
// The sound has changed without an intervening removal
if(curSource->isActive && !sent->startLoopingSound &&
curSource->sfx != sent->loopSfx)
{
S_AL_NewLoopMaster(curSource, qtrue);
curSource->isPlaying = qfalse;
qalSourceStop(curSource->alSource);
qalSourcei(curSource->alSource, AL_BUFFER, 0);
sent->startLoopingSound = qtrue;
}
// The sound hasn't been started yet
if(sent->startLoopingSound)
{
S_AL_SrcSetup(i, sent->loopSfx, sent->loopPriority,
entityNum, -1, curSource->local);
curSource->isLooping = qtrue;
knownSfx[curSource->sfx].loopCnt++;
sent->startLoopingSound = qfalse;
}
curSfx = &knownSfx[curSource->sfx];
S_AL_ScaleGain(curSource, curSource->loopSpeakerPos);
if(!curSource->scaleGain)
{
if(curSource->isPlaying)
{
// Sound is mute, stop playback until we are in range again
S_AL_NewLoopMaster(curSource, qfalse);
qalSourceStop(curSource->alSource);
curSource->isPlaying = qfalse;
}
else if(!curSfx->loopActiveCnt && curSfx->masterLoopSrc < 0)
curSfx->masterLoopSrc = i;
continue;
}
if(!curSource->isPlaying)
{
if(curSource->priority == SRCPRI_AMBIENT)
{
// If there are other ambient looping sources with the same sound,
// make sure the sound of these sources are in sync.
if(curSfx->loopActiveCnt)
{
int offset, error;
// we already have a master loop playing, get buffer position.
S_AL_ClearError(qfalse);
qalGetSourcei(srcList[curSfx->masterLoopSrc].alSource, AL_SAMPLE_OFFSET, &offset);
if((error = qalGetError()) != AL_NO_ERROR)
{
if(error != AL_INVALID_ENUM)
{
Com_Printf(S_COLOR_YELLOW "WARNING: Cannot get sample offset from source %d: "
"%s\n", i, S_AL_ErrorMsg(error));
}
}
else
qalSourcei(curSource->alSource, AL_SAMPLE_OFFSET, offset);
}
else if(curSfx->loopCnt && curSfx->masterLoopSrc >= 0)
{
float secofs;
src_t *master = &srcList[curSfx->masterLoopSrc];
// This loop sound used to be played, but all sources are stopped. Use last sample position/time
// to calculate offset so the player thinks the sources continued playing while they were inaudible.
if(master->lastTimePos >= 0)
{
secofs = master->lastTimePos + (Sys_Milliseconds() - master->lastSampleTime) / 1000.0f;
secofs = fmodf(secofs, (float) curSfx->info.samples / curSfx->info.rate);
qalSourcef(curSource->alSource, AL_SEC_OFFSET, secofs);
}
// I be the master now
curSfx->masterLoopSrc = i;
}
else
curSfx->masterLoopSrc = i;
}
else if(curSource->lastTimePos >= 0)
{
float secofs;
// For unsynced loops (SRCPRI_ENTITY) just carry on playing as if the sound was never stopped
secofs = curSource->lastTimePos + (Sys_Milliseconds() - curSource->lastSampleTime) / 1000.0f;
secofs = fmodf(secofs, (float) curSfx->info.samples / curSfx->info.rate);
qalSourcef(curSource->alSource, AL_SEC_OFFSET, secofs);
}
curSfx->loopActiveCnt++;
qalSourcei(curSource->alSource, AL_LOOPING, AL_TRUE);
curSource->isPlaying = qtrue;
qalSourcePlay(curSource->alSource);
}
// Update locality
if(curSource->local)
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_TRUE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, 0.0f);
}
else
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_FALSE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
}
}
else if(curSource->priority == SRCPRI_AMBIENT)
{
if(curSource->isPlaying)
{
S_AL_NewLoopMaster(curSource, qfalse);
qalSourceStop(curSource->alSource);
curSource->isPlaying = qfalse;
}
}
else
S_AL_SrcKill(i);
continue;
}
// Check if it's done, and flag it
qalGetSourcei(curSource->alSource, AL_SOURCE_STATE, &state);
if(state == AL_STOPPED)
{
curSource->isPlaying = qfalse;
S_AL_SrcKill(i);
continue;
}
// Query relativity of source, don't move if it's true
qalGetSourcei(curSource->alSource, AL_SOURCE_RELATIVE, &state);
// See if it needs to be moved
if(curSource->isTracking && !state)
{
qalSourcefv(curSource->alSource, AL_POSITION, entityList[entityNum].origin);
S_AL_ScaleGain(curSource, entityList[entityNum].origin);
}
}
}
/*
=================
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 streamSourceHandles[MAX_RAW_STREAMS];
static qboolean streamPlaying[MAX_RAW_STREAMS];
static ALuint streamSources[MAX_RAW_STREAMS];
/*
=================
S_AL_AllocateStreamChannel
=================
*/
static void S_AL_AllocateStreamChannel( int stream )
{
if ((stream < 0) || (stream >= MAX_RAW_STREAMS))
return;
// Allocate a streamSource at high priority
streamSourceHandles[stream] = S_AL_SrcAlloc(SRCPRI_STREAM, -2, 0);
if(streamSourceHandles[stream] == -1)
return;
// Lock the streamSource so nobody else can use it, and get the raw streamSource
S_AL_SrcLock(streamSourceHandles[stream]);
streamSources[stream] = S_AL_SrcGet(streamSourceHandles[stream]);
// make sure that after unmuting the S_AL_Gain in S_Update() does not turn
// volume up prematurely for this source
srcList[streamSourceHandles[stream]].scaleGain = 0.0f;
// Set some streamSource parameters
qalSourcei (streamSources[stream], AL_BUFFER, 0 );
qalSourcei (streamSources[stream], AL_LOOPING, AL_FALSE );
qalSource3f(streamSources[stream], AL_POSITION, 0.0, 0.0, 0.0);
qalSource3f(streamSources[stream], AL_VELOCITY, 0.0, 0.0, 0.0);
qalSource3f(streamSources[stream], AL_DIRECTION, 0.0, 0.0, 0.0);
qalSourcef (streamSources[stream], AL_ROLLOFF_FACTOR, 0.0 );
qalSourcei (streamSources[stream], AL_SOURCE_RELATIVE, AL_TRUE );
}
/*
=================
S_AL_FreeStreamChannel
=================
*/
static void S_AL_FreeStreamChannel( int stream )
{
if ((stream < 0) || (stream >= MAX_RAW_STREAMS))
return;
// Release the output streamSource
S_AL_SrcUnlock(streamSourceHandles[stream]);
streamSources[stream] = 0;
streamSourceHandles[stream] = -1;
}
/*
=================
S_AL_RawSamples
=================
*/
static
void S_AL_RawSamples(int stream, int samples, int rate, int width, int channels, const byte *data, float volume)
{
ALuint buffer;
ALuint format;
if ((stream < 0) || (stream >= MAX_RAW_STREAMS))
return;
format = S_AL_Format( width, channels );
// Create the streamSource if necessary
if(streamSourceHandles[stream] == -1)
{
S_AL_AllocateStreamChannel(stream);
// Failed?
if(streamSourceHandles[stream] == -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(streamSources[stream], 1, &buffer);
// Volume
S_AL_Gain (streamSources[stream], volume * s_volume->value * s_alGain->value);
}
/*
=================
S_AL_StreamUpdate
=================
*/
static
void S_AL_StreamUpdate( int stream )
{
int numBuffers;
ALint state;
if ((stream < 0) || (stream >= MAX_RAW_STREAMS))
return;
if(streamSourceHandles[stream] == -1)
return;
// Un-queue any buffers, and delete them
qalGetSourcei( streamSources[stream], AL_BUFFERS_PROCESSED, &numBuffers );
while( numBuffers-- )
{
ALuint buffer;
qalSourceUnqueueBuffers(streamSources[stream], 1, &buffer);
qalDeleteBuffers(1, &buffer);
}
// Start the streamSource playing if necessary
qalGetSourcei( streamSources[stream], AL_BUFFERS_QUEUED, &numBuffers );
qalGetSourcei(streamSources[stream], AL_SOURCE_STATE, &state);
if(state == AL_STOPPED)
{
streamPlaying[stream] = qfalse;
// If there are no buffers queued up, release the streamSource
if( !numBuffers )
S_AL_FreeStreamChannel( stream );
}
if( !streamPlaying[stream] && numBuffers )
{
qalSourcePlay( streamSources[stream] );
streamPlaying[stream] = qtrue;
}
}
/*
=================
S_AL_StreamDie
=================
*/
static
void S_AL_StreamDie( int stream )
{
int numBuffers;
if ((stream < 0) || (stream >= MAX_RAW_STREAMS))
return;
if(streamSourceHandles[stream] == -1)
return;
streamPlaying[stream] = qfalse;
qalSourceStop(streamSources[stream]);
// Un-queue any buffers, and delete them
qalGetSourcei( streamSources[stream], AL_BUFFERS_PROCESSED, &numBuffers );
while( numBuffers-- )
{
ALuint buffer;
qalSourceUnqueueBuffers(streamSources[stream], 1, &buffer);
qalDeleteBuffers(1, &buffer);
}
S_AL_FreeStreamChannel(stream);
}
//===========================================================================
#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 snd_stream_t *intro_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);
// make sure that after unmuting the S_AL_Gain in S_Update() does not turn
// volume up prematurely for this source
srcList[musicSourceHandle].scaleGain = 0.0f;
// 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_CloseMusicFiles
=================
*/
static void S_AL_CloseMusicFiles(void)
{
if(intro_stream)
{
S_CodecCloseStream(intro_stream);
intro_stream = NULL;
}
if(mus_stream)
{
S_CodecCloseStream(mus_stream);
mus_stream = NULL;
}
}
/*
=================
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
S_AL_CloseMusicFiles();
musicPlaying = qfalse;
}
/*
=================
S_AL_MusicProcess
=================
*/
static
void S_AL_MusicProcess(ALuint b)
{
ALenum error;
int l;
ALuint format;
snd_stream_t *curstream;
S_AL_ClearError( qfalse );
if(intro_stream)
curstream = intro_stream;
else
curstream = mus_stream;
if(!curstream)
return;
l = S_CodecReadStream(curstream, MUSIC_BUFFER_SIZE, decode_buffer);
// Run out data to read, start at the beginning again
if(l == 0)
{
S_CodecCloseStream(curstream);
// the intro stream just finished playing so we don't need to reopen
// the music stream.
if(intro_stream)
intro_stream = NULL;
else
mus_stream = S_CodecOpenStream(s_backgroundLoop);
curstream = mus_stream;
if(!curstream)
{
S_AL_StopBackgroundTrack();
return;
}
l = S_CodecReadStream(curstream, MUSIC_BUFFER_SIZE, decode_buffer);
}
format = S_AL_Format(curstream->info.width, curstream->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, curstream->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;
qboolean issame;
// Stop any existing music that might be playing
S_AL_StopBackgroundTrack();
if((!intro || !*intro) && (!loop || !*loop))
return;
// Allocate a musicSource
S_AL_MusicSourceGet();
if(musicSourceHandle == -1)
return;
if (!loop || !*loop)
{
loop = intro;
issame = qtrue;
}
else if(intro && *intro && !strcmp(intro, loop))
issame = qtrue;
else
issame = qfalse;
// Copy the loop over
strncpy( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
if(!issame)
{
// Open the intro and don't mind whether it succeeds.
// The important part is the loop.
intro_stream = S_CodecOpenStream(intro);
}
else
intro_stream = NULL;
mus_stream = S_CodecOpenStream(s_backgroundLoop);
if(!mus_stream)
{
S_AL_CloseMusicFiles();
S_AL_MusicSourceFree();
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
S_AL_Gain(musicSource, 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
S_AL_Gain(musicSource, s_alGain->value * s_musicVolume->value);
}
//===========================================================================
// Local state variables
static ALCdevice *alDevice;
static ALCcontext *alContext;
#ifdef USE_VOIP
static ALCdevice *alCaptureDevice;
static cvar_t *s_alCapture;
#endif
#ifdef _WIN32
#define ALDRIVER_DEFAULT "OpenAL32.dll"
#elif defined(MACOS_X)
#define ALDRIVER_DEFAULT "/System/Library/Frameworks/OpenAL.framework/OpenAL"
#else
#define ALDRIVER_DEFAULT "libopenal.so.1"
#endif
/*
=================
S_AL_StopAllSounds
=================
*/
static
void S_AL_StopAllSounds( void )
{
int i;
S_AL_SrcShutup();
S_AL_StopBackgroundTrack();
for (i = 0; i < MAX_RAW_STREAMS; i++)
S_AL_StreamDie(i);
}
/*
=================
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;
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 )
{
int i;
if(s_muted->modified)
{
// muted state changed. Let S_AL_Gain turn up all sources again.
for(i = 0; i < srcCount; i++)
{
if(srcList[i].isActive)
S_AL_Gain(srcList[i].alSource, srcList[i].scaleGain);
}
s_muted->modified = qfalse;
}
// Update SFX channels
S_AL_SrcUpdate();
// Update streams
for (i = 0; i < MAX_RAW_STREAMS; i++)
S_AL_StreamUpdate(i);
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 )
{
if(!numSfx)
S_AL_BufferInit();
}
/*
=================
S_AL_ClearSoundBuffer
=================
*/
static
void S_AL_ClearSoundBuffer( void )
{
}
/*
=================
S_AL_SoundList
=================
*/
static
void S_AL_SoundList( void )
{
}
#ifdef USE_VOIP
static
void S_AL_StartCapture( void )
{
if (alCaptureDevice != NULL)
qalcCaptureStart(alCaptureDevice);
}
static
int S_AL_AvailableCaptureSamples( void )
{
int retval = 0;
if (alCaptureDevice != NULL)
{
ALint samples = 0;
qalcGetIntegerv(alCaptureDevice, ALC_CAPTURE_SAMPLES, sizeof (samples), &samples);
retval = (int) samples;
}
return retval;
}
static
void S_AL_Capture( int samples, byte *data )
{
if (alCaptureDevice != NULL)
qalcCaptureSamples(alCaptureDevice, data, samples);
}
void S_AL_StopCapture( void )
{
if (alCaptureDevice != NULL)
qalcCaptureStop(alCaptureDevice);
}
void S_AL_MasterGain( float gain )
{
qalListenerf(AL_GAIN, gain);
}
#endif
/*
=================
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( " AL Extensions: %s\n", qalGetString( AL_EXTENSIONS ) );
Com_Printf( " ALC Extensions: %s\n", qalcGetString( alDevice, ALC_EXTENSIONS ) );
if(enumeration_all_ext)
Com_Printf(" Device: %s\n", qalcGetString(alDevice, ALC_ALL_DEVICES_SPECIFIER));
else if(enumeration_ext)
Com_Printf(" Device: %s\n", qalcGetString(alDevice, ALC_DEVICE_SPECIFIER));
if(enumeration_all_ext || enumeration_ext)
Com_Printf(" Available Devices:\n%s", s_alAvailableDevices->string);
#ifdef USE_VOIP
if(capture_ext)
{
Com_Printf(" Input Device: %s\n", qalcGetString(alCaptureDevice, ALC_CAPTURE_DEVICE_SPECIFIER));
Com_Printf(" Available Input Devices:\n%s", s_alAvailableInputDevices->string);
}
#endif
}
/*
=================
S_AL_Shutdown
=================
*/
static
void S_AL_Shutdown( void )
{
// Shut down everything
int i;
for (i = 0; i < MAX_RAW_STREAMS; i++)
S_AL_StreamDie(i);
S_AL_StopBackgroundTrack( );
S_AL_SrcShutdown( );
S_AL_BufferShutdown( );
qalcDestroyContext(alContext);
qalcCloseDevice(alDevice);
#ifdef USE_VOIP
if (alCaptureDevice != NULL) {
qalcCaptureStop(alCaptureDevice);
qalcCaptureCloseDevice(alCaptureDevice);
alCaptureDevice = NULL;
Com_Printf( "OpenAL capture device closed.\n" );
}
#endif
for (i = 0; i < MAX_RAW_STREAMS; i++) {
streamSourceHandles[i] = -1;
streamPlaying[i] = qfalse;
streamSources[i] = 0;
}
QAL_Shutdown();
}
#endif
/*
=================
S_AL_Init
=================
*/
qboolean S_AL_Init( soundInterface_t *si )
{
#ifdef USE_OPENAL
const char* device = NULL;
const char* inputdevice = NULL;
int i;
if( !si ) {
return qfalse;
}
for (i = 0; i < MAX_RAW_STREAMS; i++) {
streamSourceHandles[i] = -1;
streamPlaying[i] = qfalse;
streamSources[i] = 0;
}
// New console variables
s_alPrecache = Cvar_Get( "s_alPrecache", "1", CVAR_ARCHIVE );
s_alGain = Cvar_Get( "s_alGain", "1.0", 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_alMaxDistance = Cvar_Get("s_alMaxDistance", "1024", CVAR_CHEAT);
s_alRolloff = Cvar_Get( "s_alRolloff", "2", CVAR_CHEAT);
s_alGraceDistance = Cvar_Get("s_alGraceDistance", "512", CVAR_CHEAT);
s_alDriver = Cvar_Get( "s_alDriver", ALDRIVER_DEFAULT, CVAR_ARCHIVE | CVAR_LATCH );
s_alInputDevice = Cvar_Get( "s_alInputDevice", "", CVAR_ARCHIVE | CVAR_LATCH );
s_alDevice = Cvar_Get("s_alDevice", "", CVAR_ARCHIVE | CVAR_LATCH);
// Load QAL
if( !QAL_Init( s_alDriver->string ) )
{
Com_Printf( "Failed to load library: \"%s\".\n", s_alDriver->string );
return qfalse;
}
device = s_alDevice->string;
if(device && !*device)
device = NULL;
inputdevice = s_alInputDevice->string;
if(inputdevice && !*inputdevice)
inputdevice = NULL;
// Device enumeration support
enumeration_all_ext = qalcIsExtensionPresent(NULL, "ALC_ENUMERATE_ALL_EXT");
enumeration_ext = qalcIsExtensionPresent(NULL, "ALC_ENUMERATION_EXT");
if(enumeration_ext || enumeration_all_ext)
{
char devicenames[16384] = "";
const char *devicelist;
const char *defaultdevice;
int curlen;
// get all available devices + the default device name.
if(enumeration_ext)
{
devicelist = qalcGetString(NULL, ALC_ALL_DEVICES_SPECIFIER);
defaultdevice = qalcGetString(NULL, ALC_DEFAULT_ALL_DEVICES_SPECIFIER);
}
else
{
// We don't have ALC_ENUMERATE_ALL_EXT but normal enumeration.
devicelist = qalcGetString(NULL, ALC_DEVICE_SPECIFIER);
defaultdevice = qalcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER);
enumeration_ext = qtrue;
}
#ifdef _WIN32
// check whether the default device is generic hardware. If it is, change to
// Generic Software as that one works more reliably with various sound systems.
// If it's not, use OpenAL's default selection as we don't want to ignore
// native hardware acceleration.
if(!device && !strcmp(defaultdevice, "Generic Hardware"))
device = "Generic Software";
#endif
// dump a list of available devices to a cvar for the user to see.
while((curlen = strlen(devicelist)))
{
Q_strcat(devicenames, sizeof(devicenames), devicelist);
Q_strcat(devicenames, sizeof(devicenames), "\n");
devicelist += curlen + 1;
}
s_alAvailableDevices = Cvar_Get("s_alAvailableDevices", devicenames, CVAR_ROM | CVAR_NORESTART);
}
alDevice = qalcOpenDevice(device);
if( !alDevice && device )
{
Com_Printf( "Failed to open OpenAL device '%s', trying default.\n", 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)
qalDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
qalDopplerFactor( s_alDopplerFactor->value );
qalDopplerVelocity( s_alDopplerSpeed->value );
#ifdef USE_VOIP
// !!! FIXME: some of these alcCaptureOpenDevice() values should be cvars.
// !!! FIXME: add support for capture device enumeration.
// !!! FIXME: add some better error reporting.
s_alCapture = Cvar_Get( "s_alCapture", "1", CVAR_ARCHIVE | CVAR_LATCH );
if (!s_alCapture->integer)
{
Com_Printf("OpenAL capture support disabled by user ('+set s_alCapture 1' to enable)\n");
}
#if USE_MUMBLE
else if (cl_useMumble->integer)
{
Com_Printf("OpenAL capture support disabled for Mumble support\n");
}
#endif
else
{
#ifdef MACOS_X
// !!! FIXME: Apple has a 1.1-compliant OpenAL, which includes
// !!! FIXME: capture support, but they don't list it in the
// !!! FIXME: extension string. We need to check the version string,
// !!! FIXME: then the extension string, but that's too much trouble,
// !!! FIXME: so we'll just check the function pointer for now.
if (qalcCaptureOpenDevice == NULL)
#else
if (!qalcIsExtensionPresent(NULL, "ALC_EXT_capture"))
#endif
{
Com_Printf("No ALC_EXT_capture support, can't record audio.\n");
}
else
{
char inputdevicenames[16384] = "";
const char *inputdevicelist;
const char *defaultinputdevice;
int curlen;
capture_ext = qtrue;
// get all available input devices + the default input device name.
inputdevicelist = qalcGetString(NULL, ALC_CAPTURE_DEVICE_SPECIFIER);
defaultinputdevice = qalcGetString(NULL, ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER);
// dump a list of available devices to a cvar for the user to see.
while((curlen = strlen(inputdevicelist)))
{
Q_strcat(inputdevicenames, sizeof(inputdevicenames), inputdevicelist);
Q_strcat(inputdevicenames, sizeof(inputdevicenames), "\n");
inputdevicelist += curlen + 1;
}
s_alAvailableInputDevices = Cvar_Get("s_alAvailableInputDevices", inputdevicenames, CVAR_ROM | CVAR_NORESTART);
// !!! FIXME: 8000Hz is what Speex narrowband mode needs, but we
// !!! FIXME: should probably open the capture device after
// !!! FIXME: initializing Speex so we can change to wideband
// !!! FIXME: if we like.
Com_Printf("OpenAL default capture device is '%s'\n", defaultinputdevice);
alCaptureDevice = qalcCaptureOpenDevice(inputdevice, 8000, AL_FORMAT_MONO16, 4096);
if( !alCaptureDevice && inputdevice )
{
Com_Printf( "Failed to open OpenAL Input device '%s', trying default.\n", inputdevice );
alCaptureDevice = qalcCaptureOpenDevice(NULL, 8000, AL_FORMAT_MONO16, 4096);
}
Com_Printf( "OpenAL capture device %s.\n",
(alCaptureDevice == NULL) ? "failed to open" : "opened");
}
}
#endif
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;
#ifdef USE_VOIP
si->StartCapture = S_AL_StartCapture;
si->AvailableCaptureSamples = S_AL_AvailableCaptureSamples;
si->Capture = S_AL_Capture;
si->StopCapture = S_AL_StopCapture;
si->MasterGain = S_AL_MasterGain;
#endif
return qtrue;
#else
return qfalse;
#endif
}
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