/
oalsound.cpp
1973 lines (1719 loc) · 59.6 KB
/
oalsound.cpp
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/*
** oalsound.cpp
** System interface for sound; uses OpenAL
**
**---------------------------------------------------------------------------
** Copyright 2008-2010 Chris Robinson
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#define USE_WINDOWS_DWORD
#endif
#include "except.h"
#include "doomstat.h"
#include "templates.h"
#include "oalsound.h"
#include "c_cvars.h"
#include "c_dispatch.h"
#include "i_system.h"
#include "v_text.h"
#include "gi.h"
#include "actor.h"
#include "r_state.h"
#include "w_wad.h"
#include "i_music.h"
#include "i_musicinterns.h"
#include "tempfiles.h"
CVAR (String, snd_aldevice, "Default", CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Bool, snd_efx, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
bool IsOpenALPresent()
{
#ifdef NO_OPENAL
return false;
#elif !defined _WIN32
return true; // on non-Windows we cannot delay load the library so it has to be present.
#else
static bool cached_result;
static bool done = false;
if (!done)
{
done = true;
__try
{
// just call one function from the API to force loading the DLL
alcGetError(NULL);
}
__except (CheckException(GetExceptionCode()))
{
// FMod could not be delay loaded
return false;
}
cached_result = true;
}
return cached_result;
#endif
}
void I_BuildALDeviceList(FOptionValues *opt)
{
opt->mValues.Resize(1);
opt->mValues[0].TextValue = "Default";
opt->mValues[0].Text = "Default";
#ifndef NO_OPENAL
if (IsOpenALPresent())
{
const ALCchar *names = (alcIsExtensionPresent(NULL, "ALC_ENUMERATE_ALL_EXT") ?
alcGetString(NULL, ALC_ALL_DEVICES_SPECIFIER) :
alcGetString(NULL, ALC_DEVICE_SPECIFIER));
if (!names)
Printf("Failed to get device list: %s\n", alcGetString(NULL, alcGetError(NULL)));
else while (*names)
{
unsigned int i = opt->mValues.Reserve(1);
opt->mValues[i].TextValue = names;
opt->mValues[i].Text = names;
names += strlen(names) + 1;
}
}
#endif
}
#ifndef NO_OPENAL
EXTERN_CVAR (Int, snd_channels)
EXTERN_CVAR (Int, snd_samplerate)
EXTERN_CVAR (Bool, snd_waterreverb)
EXTERN_CVAR (Bool, snd_pitched)
#define MAKE_PTRID(x) ((void*)(uintptr_t)(x))
#define GET_PTRID(x) ((uint32)(uintptr_t)(x))
static ALenum checkALError(const char *fn, unsigned int ln)
{
ALenum err = alGetError();
if(err != AL_NO_ERROR)
{
if(strchr(fn, '/'))
fn = strrchr(fn, '/')+1;
else if(strchr(fn, '\\'))
fn = strrchr(fn, '\\')+1;
Printf(">>>>>>>>>>>> Received AL error %s (%#x), %s:%u\n", alGetString(err), err, fn, ln);
}
return err;
}
#define getALError() checkALError(__FILE__, __LINE__)
static ALCenum checkALCError(ALCdevice *device, const char *fn, unsigned int ln)
{
ALCenum err = alcGetError(device);
if(err != ALC_NO_ERROR)
{
if(strchr(fn, '/'))
fn = strrchr(fn, '/')+1;
else if(strchr(fn, '\\'))
fn = strrchr(fn, '\\')+1;
Printf(">>>>>>>>>>>> Received ALC error %s (%#x), %s:%u\n", alcGetString(device, err), err, fn, ln);
}
return err;
}
#define getALCError(d) checkALCError((d), __FILE__, __LINE__)
// Fallback methods for when AL_SOFT_deferred_updates isn't available. In most
// cases these don't actually do anything, except on some Creative drivers
// where they act as appropriate fallbacks.
static ALvoid AL_APIENTRY _wrap_DeferUpdatesSOFT(void)
{
alcSuspendContext(alcGetCurrentContext());
}
static ALvoid AL_APIENTRY _wrap_ProcessUpdatesSOFT(void)
{
alcProcessContext(alcGetCurrentContext());
}
class OpenALSoundStream : public SoundStream
{
OpenALSoundRenderer *Renderer;
SoundStreamCallback Callback;
void *UserData;
TArray<ALubyte> Data;
ALsizei SampleRate;
ALenum Format;
ALsizei FrameSize;
static const int BufferCount = 4;
ALuint Buffers[BufferCount];
ALuint Source;
bool Playing;
bool Looping;
ALfloat Volume;
FileReader *Reader;
SoundDecoder *Decoder;
static bool DecoderCallback(SoundStream *_sstream, void *ptr, int length, void *user)
{
OpenALSoundStream *self = static_cast<OpenALSoundStream*>(_sstream);
if(length < 0) return false;
size_t got = self->Decoder->read((char*)ptr, length);
if(got < (unsigned int)length)
{
if(!self->Looping || !self->Decoder->seek(0))
return false;
got += self->Decoder->read((char*)ptr+got, length-got);
}
return (got == (unsigned int)length);
}
bool SetupSource()
{
/* Get a source, killing the farthest, lowest-priority sound if needed */
if(Renderer->FreeSfx.Size() == 0)
{
FSoundChan *lowest = Renderer->FindLowestChannel();
if(lowest) Renderer->StopChannel(lowest);
if(Renderer->FreeSfx.Size() == 0)
return false;
}
Renderer->FreeSfx.Pop(Source);
/* Set the default properties for localized playback */
alSource3f(Source, AL_DIRECTION, 0.f, 0.f, 0.f);
alSource3f(Source, AL_VELOCITY, 0.f, 0.f, 0.f);
alSource3f(Source, AL_POSITION, 0.f, 0.f, 0.f);
alSourcef(Source, AL_MAX_GAIN, 1.f);
alSourcef(Source, AL_GAIN, 1.f);
alSourcef(Source, AL_PITCH, 1.f);
alSourcef(Source, AL_ROLLOFF_FACTOR, 0.f);
alSourcef(Source, AL_SEC_OFFSET, 0.f);
alSourcei(Source, AL_SOURCE_RELATIVE, AL_TRUE);
alSourcei(Source, AL_LOOPING, AL_FALSE);
if(Renderer->EnvSlot)
{
alSourcef(Source, AL_ROOM_ROLLOFF_FACTOR, 0.f);
alSourcef(Source, AL_AIR_ABSORPTION_FACTOR, 0.f);
alSourcei(Source, AL_DIRECT_FILTER, AL_FILTER_NULL);
alSource3i(Source, AL_AUXILIARY_SEND_FILTER, 0, 0, AL_FILTER_NULL);
}
alGenBuffers(BufferCount, Buffers);
return (getALError() == AL_NO_ERROR);
}
public:
OpenALSoundStream(OpenALSoundRenderer *renderer)
: Renderer(renderer), Source(0), Playing(false), Looping(false), Volume(1.0f), Reader(NULL), Decoder(NULL)
{
Renderer->Streams.Push(this);
memset(Buffers, 0, sizeof(Buffers));
}
virtual ~OpenALSoundStream()
{
if(Source)
{
alSourceRewind(Source);
alSourcei(Source, AL_BUFFER, 0);
Renderer->FreeSfx.Push(Source);
Source = 0;
}
if(Buffers[0])
{
alDeleteBuffers(BufferCount, &Buffers[0]);
memset(Buffers, 0, sizeof(Buffers));
}
getALError();
Renderer->Streams.Delete(Renderer->Streams.Find(this));
Renderer = NULL;
delete Decoder;
delete Reader;
}
virtual bool Play(bool loop, float vol)
{
SetVolume(vol);
if(Playing)
return true;
/* Clear the buffer queue, then fill and queue each buffer */
alSourcei(Source, AL_BUFFER, 0);
for(int i = 0;i < BufferCount;i++)
{
if(!Callback(this, &Data[0], Data.Size(), UserData))
{
if(i == 0)
return false;
break;
}
alBufferData(Buffers[i], Format, &Data[0], Data.Size(), SampleRate);
alSourceQueueBuffers(Source, 1, &Buffers[i]);
}
if(getALError() != AL_NO_ERROR)
return false;
alSourcePlay(Source);
Playing = (getALError()==AL_NO_ERROR);
return Playing;
}
virtual void Stop()
{
if(!Playing)
return;
alSourceStop(Source);
alSourcei(Source, AL_BUFFER, 0);
getALError();
Playing = false;
}
virtual void SetVolume(float vol)
{
Volume = vol;
UpdateVolume();
}
void UpdateVolume()
{
alSourcef(Source, AL_GAIN, Renderer->MusicVolume*Volume);
getALError();
}
virtual bool SetPaused(bool pause)
{
if(pause)
alSourcePause(Source);
else
alSourcePlay(Source);
return (getALError()==AL_NO_ERROR);
}
virtual bool SetPosition(unsigned int ms_pos)
{
if(!Decoder->seek(ms_pos))
return false;
if(!Playing)
return true;
// Stop the source so that all buffers become processed, then call
// IsEnded() to refill and restart the source queue with the new
// position.
alSourceStop(Source);
getALError();
return !IsEnded();
}
virtual unsigned int GetPosition()
{
ALint offset, queued, state;
alGetSourcei(Source, AL_SAMPLE_OFFSET, &offset);
alGetSourcei(Source, AL_BUFFERS_QUEUED, &queued);
alGetSourcei(Source, AL_SOURCE_STATE, &state);
if(getALError() != AL_NO_ERROR)
return 0;
size_t pos = Decoder->getSampleOffset();
if(state != AL_STOPPED)
{
size_t rem = queued*(Data.Size()/FrameSize) - offset;
if(pos > rem) pos -= rem;
else pos = 0;
}
return (unsigned int)(pos * 1000.0 / SampleRate);
}
virtual bool IsEnded()
{
if(!Playing)
return true;
ALint state, processed;
alGetSourcei(Source, AL_SOURCE_STATE, &state);
alGetSourcei(Source, AL_BUFFERS_PROCESSED, &processed);
Playing = (getALError()==AL_NO_ERROR);
if(!Playing)
return true;
// For each processed buffer in the queue...
while(processed > 0)
{
ALuint bufid;
// Unqueue the oldest buffer, fill it with more data, and queue it
// on the end
alSourceUnqueueBuffers(Source, 1, &bufid);
processed--;
if(Callback(this, &Data[0], Data.Size(), UserData))
{
alBufferData(bufid, Format, &Data[0], Data.Size(), SampleRate);
alSourceQueueBuffers(Source, 1, &bufid);
}
}
// If the source is not playing or paused, and there are buffers queued,
// then there was an underrun. Restart the source.
Playing = (getALError()==AL_NO_ERROR);
if(Playing && state != AL_PLAYING && state != AL_PAUSED)
{
ALint queued = 0;
alGetSourcei(Source, AL_BUFFERS_QUEUED, &queued);
Playing = (getALError() == AL_NO_ERROR) && (queued > 0);
if(Playing)
{
alSourcePlay(Source);
Playing = (getALError()==AL_NO_ERROR);
}
}
return !Playing;
}
FString GetStats()
{
FString stats;
size_t pos, len;
ALfloat volume;
ALint offset;
ALint processed;
ALint queued;
ALint state;
ALenum err;
alGetSourcef(Source, AL_GAIN, &volume);
alGetSourcei(Source, AL_SAMPLE_OFFSET, &offset);
alGetSourcei(Source, AL_BUFFERS_PROCESSED, &processed);
alGetSourcei(Source, AL_BUFFERS_QUEUED, &queued);
alGetSourcei(Source, AL_SOURCE_STATE, &state);
if((err=alGetError()) != AL_NO_ERROR)
{
stats = "Error getting stats: ";
stats += alGetString(err);
return stats;
}
stats = (state == AL_INITIAL) ? "Buffering" : (state == AL_STOPPED) ? "Underrun" :
(state == AL_PLAYING || state == AL_PAUSED) ? "Ready" : "Unknown state";
pos = Decoder->getSampleOffset();
len = Decoder->getSampleLength();
if(state == AL_STOPPED)
offset = BufferCount * (Data.Size()/FrameSize);
else
{
size_t rem = queued*(Data.Size()/FrameSize) - offset;
if(pos > rem) pos -= rem;
else if(len > 0) pos += len - rem;
else pos = 0;
}
pos = (size_t)(pos * 1000.0 / SampleRate);
len = (size_t)(len * 1000.0 / SampleRate);
stats.AppendFormat(",%3u%% buffered", 100 - 100*offset/(BufferCount*(Data.Size()/FrameSize)));
stats.AppendFormat(", %zu.%03zu", pos/1000, pos%1000);
if(len > 0)
stats.AppendFormat(" / %zu.%03zu", len/1000, len%1000);
if(state == AL_PAUSED)
stats += ", paused";
if(state == AL_PLAYING)
stats += ", playing";
stats.AppendFormat(", %uHz", SampleRate);
if(!Playing)
stats += " XX";
return stats;
}
bool Init(SoundStreamCallback callback, int buffbytes, int flags, int samplerate, void *userdata)
{
if(!SetupSource())
return false;
Callback = callback;
UserData = userdata;
SampleRate = samplerate;
Format = AL_NONE;
if((flags&Bits8)) /* Signed or unsigned? We assume unsigned 8-bit... */
{
if((flags&Mono)) Format = AL_FORMAT_MONO8;
else Format = AL_FORMAT_STEREO8;
}
else if((flags&Float))
{
if(alIsExtensionPresent("AL_EXT_FLOAT32"))
{
if((flags&Mono)) Format = AL_FORMAT_MONO_FLOAT32;
else Format = AL_FORMAT_STEREO_FLOAT32;
}
}
else if((flags&Bits32))
{
}
else
{
if((flags&Mono)) Format = AL_FORMAT_MONO16;
else Format = AL_FORMAT_STEREO16;
}
if(Format == AL_NONE)
{
Printf("Unsupported format: 0x%x\n", flags);
return false;
}
FrameSize = 1;
if((flags&Bits8))
FrameSize *= 1;
else if((flags&(Bits32|Float)))
FrameSize *= 4;
else
FrameSize *= 2;
if((flags&Mono))
FrameSize *= 1;
else
FrameSize *= 2;
buffbytes += FrameSize-1;
buffbytes -= buffbytes%FrameSize;
Data.Resize(buffbytes);
return true;
}
bool Init(FileReader *reader, bool loop)
{
if(!SetupSource())
{
delete reader;
return false;
}
if(Decoder) delete Decoder;
if(Reader) delete Reader;
Reader = reader;
Decoder = Renderer->CreateDecoder(Reader);
if(!Decoder) return false;
Callback = DecoderCallback;
UserData = NULL;
Format = AL_NONE;
FrameSize = 1;
ChannelConfig chans;
SampleType type;
int srate;
Decoder->getInfo(&srate, &chans, &type);
if(chans == ChannelConfig_Mono)
{
if(type == SampleType_UInt8) Format = AL_FORMAT_MONO8;
if(type == SampleType_Int16) Format = AL_FORMAT_MONO16;
FrameSize *= 1;
}
if(chans == ChannelConfig_Stereo)
{
if(type == SampleType_UInt8) Format = AL_FORMAT_STEREO8;
if(type == SampleType_Int16) Format = AL_FORMAT_STEREO16;
FrameSize *= 2;
}
if(type == SampleType_UInt8) FrameSize *= 1;
if(type == SampleType_Int16) FrameSize *= 2;
if(Format == AL_NONE)
{
Printf("Unsupported audio format: %s, %s\n", GetChannelConfigName(chans),
GetSampleTypeName(type));
return false;
}
SampleRate = srate;
Looping = loop;
Data.Resize((size_t)(0.2 * SampleRate) * FrameSize);
return true;
}
};
extern ReverbContainer *ForcedEnvironment;
#define AREA_SOUND_RADIUS (128.f)
#define PITCH_MULT (0.7937005f) /* Approx. 4 semitones lower; what Nash suggested */
#define PITCH(pitch) (snd_pitched ? (pitch)/128.f : 1.f)
static float GetRolloff(const FRolloffInfo *rolloff, float distance)
{
if(distance <= rolloff->MinDistance)
return 1.f;
// Logarithmic rolloff has no max distance where it goes silent.
if(rolloff->RolloffType == ROLLOFF_Log)
return rolloff->MinDistance /
(rolloff->MinDistance + rolloff->RolloffFactor*(distance-rolloff->MinDistance));
if(distance >= rolloff->MaxDistance)
return 0.f;
float volume = (rolloff->MaxDistance - distance) / (rolloff->MaxDistance - rolloff->MinDistance);
if(rolloff->RolloffType == ROLLOFF_Linear)
return volume;
if(rolloff->RolloffType == ROLLOFF_Custom && S_SoundCurve != NULL)
return S_SoundCurve[int(S_SoundCurveSize * (1.f - volume))] / 127.f;
return (powf(10.f, volume) - 1.f) / 9.f;
}
ALCdevice *OpenALSoundRenderer::InitDevice()
{
ALCdevice *device = NULL;
if (IsOpenALPresent())
{
if(strcmp(snd_aldevice, "Default") != 0)
{
device = alcOpenDevice(*snd_aldevice);
if(!device)
Printf(TEXTCOLOR_BLUE" Failed to open device "TEXTCOLOR_BOLD"%s"TEXTCOLOR_BLUE". Trying default.\n", *snd_aldevice);
}
if(!device)
{
device = alcOpenDevice(NULL);
if(!device)
{
Printf(TEXTCOLOR_RED" Could not open audio device\n");
}
}
}
else
{
Printf(TEXTCOLOR_ORANGE"Failed to load openal32.dll\n");
}
return device;
}
template<typename T>
static void LoadALFunc(const char *name, T *x)
{ *x = reinterpret_cast<T>(alGetProcAddress(name)); }
#define LOAD_FUNC(x) (LoadALFunc(#x, &x))
OpenALSoundRenderer::OpenALSoundRenderer()
: Device(NULL), Context(NULL), SFXPaused(0), PrevEnvironment(NULL), EnvSlot(0)
{
EnvFilters[0] = EnvFilters[1] = 0;
Printf("I_InitSound: Initializing OpenAL\n");
Device = InitDevice();
if (Device == NULL) return;
const ALCchar *current = NULL;
if(alcIsExtensionPresent(Device, "ALC_ENUMERATE_ALL_EXT"))
current = alcGetString(Device, ALC_ALL_DEVICES_SPECIFIER);
if(alcGetError(Device) != ALC_NO_ERROR || !current)
current = alcGetString(Device, ALC_DEVICE_SPECIFIER);
Printf(" Opened device "TEXTCOLOR_ORANGE"%s\n", current);
ALCint major=0, minor=0;
alcGetIntegerv(Device, ALC_MAJOR_VERSION, 1, &major);
alcGetIntegerv(Device, ALC_MINOR_VERSION, 1, &minor);
DPrintf(" ALC Version: "TEXTCOLOR_BLUE"%d.%d\n", major, minor);
DPrintf(" ALC Extensions: "TEXTCOLOR_ORANGE"%s\n", alcGetString(Device, ALC_EXTENSIONS));
TArray<ALCint> attribs;
if(*snd_samplerate > 0)
{
attribs.Push(ALC_FREQUENCY);
attribs.Push(*snd_samplerate);
}
// Make sure one source is capable of stereo output with the rest doing
// mono, without running out of voices
attribs.Push(ALC_MONO_SOURCES);
attribs.Push(MAX<ALCint>(*snd_channels, 2) - 1);
attribs.Push(ALC_STEREO_SOURCES);
attribs.Push(1);
// Other attribs..?
attribs.Push(0);
Context = alcCreateContext(Device, &attribs[0]);
if(!Context || alcMakeContextCurrent(Context) == ALC_FALSE)
{
Printf(TEXTCOLOR_RED" Failed to setup context: %s\n", alcGetString(Device, alcGetError(Device)));
if(Context)
alcDestroyContext(Context);
Context = NULL;
alcCloseDevice(Device);
Device = NULL;
return;
}
attribs.Clear();
DPrintf(" Vendor: "TEXTCOLOR_ORANGE"%s\n", alGetString(AL_VENDOR));
DPrintf(" Renderer: "TEXTCOLOR_ORANGE"%s\n", alGetString(AL_RENDERER));
DPrintf(" Version: "TEXTCOLOR_ORANGE"%s\n", alGetString(AL_VERSION));
DPrintf(" Extensions: "TEXTCOLOR_ORANGE"%s\n", alGetString(AL_EXTENSIONS));
ALC.EXT_EFX = !!alcIsExtensionPresent(Device, "ALC_EXT_EFX");
ALC.EXT_disconnect = !!alcIsExtensionPresent(Device, "ALC_EXT_disconnect");;
AL.EXT_source_distance_model = !!alIsExtensionPresent("AL_EXT_source_distance_model");
AL.SOFT_deferred_updates = !!alIsExtensionPresent("AL_SOFT_deferred_updates");
AL.SOFT_loop_points = !!alIsExtensionPresent("AL_SOFT_loop_points");
alDopplerFactor(0.5f);
alSpeedOfSound(343.3f * 96.0f);
alDistanceModel(AL_INVERSE_DISTANCE);
if(AL.EXT_source_distance_model)
alEnable(AL_SOURCE_DISTANCE_MODEL);
if(AL.SOFT_deferred_updates)
{
LOAD_FUNC(alDeferUpdatesSOFT);
LOAD_FUNC(alProcessUpdatesSOFT);
}
else
{
alDeferUpdatesSOFT = _wrap_DeferUpdatesSOFT;
alProcessUpdatesSOFT = _wrap_ProcessUpdatesSOFT;
}
ALenum err = getALError();
if(err != AL_NO_ERROR)
{
alcMakeContextCurrent(NULL);
alcDestroyContext(Context);
Context = NULL;
alcCloseDevice(Device);
Device = NULL;
return;
}
ALCint numMono=0, numStereo=0;
alcGetIntegerv(Device, ALC_MONO_SOURCES, 1, &numMono);
alcGetIntegerv(Device, ALC_STEREO_SOURCES, 1, &numStereo);
Sources.Resize(MIN<int>(MAX<int>(*snd_channels, 2), numMono+numStereo));
for(size_t i = 0;i < Sources.Size();i++)
{
alGenSources(1, &Sources[i]);
if(getALError() != AL_NO_ERROR)
{
Sources.Resize(i);
Sources.ShrinkToFit();
break;
}
}
if(Sources.Size() == 0)
{
Printf(TEXTCOLOR_RED" Error: could not generate any sound sources!\n");
alcMakeContextCurrent(NULL);
alcDestroyContext(Context);
Context = NULL;
alcCloseDevice(Device);
Device = NULL;
return;
}
FreeSfx = Sources;
DPrintf(" Allocated "TEXTCOLOR_BLUE"%u"TEXTCOLOR_NORMAL" sources\n", Sources.Size());
WasInWater = false;
if(*snd_efx && ALC.EXT_EFX)
{
// EFX function pointers
LOAD_FUNC(alGenEffects);
LOAD_FUNC(alDeleteEffects);
LOAD_FUNC(alIsEffect);
LOAD_FUNC(alEffecti);
LOAD_FUNC(alEffectiv);
LOAD_FUNC(alEffectf);
LOAD_FUNC(alEffectfv);
LOAD_FUNC(alGetEffecti);
LOAD_FUNC(alGetEffectiv);
LOAD_FUNC(alGetEffectf);
LOAD_FUNC(alGetEffectfv);
LOAD_FUNC(alGenFilters);
LOAD_FUNC(alDeleteFilters);
LOAD_FUNC(alIsFilter);
LOAD_FUNC(alFilteri);
LOAD_FUNC(alFilteriv);
LOAD_FUNC(alFilterf);
LOAD_FUNC(alFilterfv);
LOAD_FUNC(alGetFilteri);
LOAD_FUNC(alGetFilteriv);
LOAD_FUNC(alGetFilterf);
LOAD_FUNC(alGetFilterfv);
LOAD_FUNC(alGenAuxiliaryEffectSlots);
LOAD_FUNC(alDeleteAuxiliaryEffectSlots);
LOAD_FUNC(alIsAuxiliaryEffectSlot);
LOAD_FUNC(alAuxiliaryEffectSloti);
LOAD_FUNC(alAuxiliaryEffectSlotiv);
LOAD_FUNC(alAuxiliaryEffectSlotf);
LOAD_FUNC(alAuxiliaryEffectSlotfv);
LOAD_FUNC(alGetAuxiliaryEffectSloti);
LOAD_FUNC(alGetAuxiliaryEffectSlotiv);
LOAD_FUNC(alGetAuxiliaryEffectSlotf);
LOAD_FUNC(alGetAuxiliaryEffectSlotfv);
if(getALError() == AL_NO_ERROR)
{
ALuint envReverb;
alGenEffects(1, &envReverb);
if(getALError() == AL_NO_ERROR)
{
alEffecti(envReverb, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
if(alGetError() == AL_NO_ERROR)
DPrintf(" EAX Reverb found\n");
alEffecti(envReverb, AL_EFFECT_TYPE, AL_EFFECT_REVERB);
if(alGetError() == AL_NO_ERROR)
DPrintf(" Standard Reverb found\n");
alDeleteEffects(1, &envReverb);
getALError();
}
alGenAuxiliaryEffectSlots(1, &EnvSlot);
alGenFilters(2, EnvFilters);
if(getALError() == AL_NO_ERROR)
{
alFilteri(EnvFilters[0], AL_FILTER_TYPE, AL_FILTER_LOWPASS);
alFilteri(EnvFilters[1], AL_FILTER_TYPE, AL_FILTER_LOWPASS);
if(getALError() == AL_NO_ERROR)
DPrintf(" Lowpass found\n");
else
{
alDeleteFilters(2, EnvFilters);
EnvFilters[0] = EnvFilters[1] = 0;
alDeleteAuxiliaryEffectSlots(1, &EnvSlot);
EnvSlot = 0;
getALError();
}
}
else
{
alDeleteFilters(2, EnvFilters);
alDeleteAuxiliaryEffectSlots(1, &EnvSlot);
EnvFilters[0] = EnvFilters[1] = 0;
EnvSlot = 0;
getALError();
}
}
}
if(EnvSlot)
Printf(" EFX enabled\n");
}
#undef LOAD_FUNC
OpenALSoundRenderer::~OpenALSoundRenderer()
{
if(!Device)
return;
while(Streams.Size() > 0)
delete Streams[0];
alDeleteSources(Sources.Size(), &Sources[0]);
Sources.Clear();
FreeSfx.Clear();
SfxGroup.Clear();
PausableSfx.Clear();
ReverbSfx.Clear();
if(EnvEffects.CountUsed() > 0)
{
EffectMapIter iter(EnvEffects);
EffectMap::Pair *pair;
while(iter.NextPair(pair))
alDeleteEffects(1, &(pair->Value));
}
EnvEffects.Clear();
if(EnvSlot)
{
alDeleteAuxiliaryEffectSlots(1, &EnvSlot);
alDeleteFilters(2, EnvFilters);
}
EnvSlot = 0;
EnvFilters[0] = EnvFilters[1] = 0;
alcMakeContextCurrent(NULL);
alcDestroyContext(Context);
Context = NULL;
alcCloseDevice(Device);
Device = NULL;
}
void OpenALSoundRenderer::SetSfxVolume(float volume)
{
SfxVolume = volume;
FSoundChan *schan = Channels;
while(schan)
{
if(schan->SysChannel != NULL)
{
ALuint source = GET_PTRID(schan->SysChannel);
volume = SfxVolume;
alDeferUpdatesSOFT();
alSourcef(source, AL_MAX_GAIN, volume);
alSourcef(source, AL_GAIN, volume * schan->Volume);
}
schan = schan->NextChan;
}
getALError();
}
void OpenALSoundRenderer::SetMusicVolume(float volume)
{
MusicVolume = volume;
for(uint32 i = 0;i < Streams.Size();++i)
Streams[i]->UpdateVolume();
}
unsigned int OpenALSoundRenderer::GetMSLength(SoundHandle sfx)
{
if(sfx.data)
{
ALuint buffer = GET_PTRID(sfx.data);
if(alIsBuffer(buffer))
{
ALint bits, channels, freq, size;
alGetBufferi(buffer, AL_BITS, &bits);
alGetBufferi(buffer, AL_CHANNELS, &channels);
alGetBufferi(buffer, AL_FREQUENCY, &freq);
alGetBufferi(buffer, AL_SIZE, &size);
if(getALError() == AL_NO_ERROR)
return (unsigned int)(size / (channels*bits/8) * 1000. / freq);
}
}
return 0;
}
unsigned int OpenALSoundRenderer::GetSampleLength(SoundHandle sfx)
{
if(sfx.data)
{
ALuint buffer = GET_PTRID(sfx.data);
ALint bits, channels, size;
alGetBufferi(buffer, AL_BITS, &bits);
alGetBufferi(buffer, AL_CHANNELS, &channels);
alGetBufferi(buffer, AL_SIZE, &size);
if(getALError() == AL_NO_ERROR)
return (ALsizei)(size / (channels * bits / 8));
}
return 0;
}
float OpenALSoundRenderer::GetOutputRate()
{
ALCint rate = 44100; // Default, just in case
alcGetIntegerv(Device, ALC_FREQUENCY, 1, &rate);
return (float)rate;
}
SoundHandle OpenALSoundRenderer::LoadSoundRaw(BYTE *sfxdata, int length, int frequency, int channels, int bits, int loopstart, int loopend)
{
SoundHandle retval = { NULL };
if(length == 0) return retval;
if(bits == -8)
{
// Simple signed->unsigned conversion
for(int i = 0;i < length;i++)
sfxdata[i] ^= 0x80;
bits = -bits;
}
ALenum format = AL_NONE;
if(bits == 16)
{
if(channels == 1) format = AL_FORMAT_MONO16;
if(channels == 2) format = AL_FORMAT_STEREO16;
}
else if(bits == 8)
{