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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "Sound.h"
#include <cstdlib>
#include <cmath>
#include <alc.h>
#ifndef ALC_ALL_DEVICES_SPECIFIER
#define ALC_ALL_DEVICES_SPECIFIER 0x1013
// needed for ALC_ALL_DEVICES_SPECIFIER on some special *nix
// #include <alext.h>
#endif
#include <climits>
#include <cinttypes>
#include <functional>
#include "System/Sound/ISoundChannels.h"
#include "System/Sound/SoundLog.h"
#include "SoundSource.h"
#include "SoundBuffer.h"
#include "SoundItem.h"
#include "ALShared.h"
#include "EFX.h"
#include "EFXPresets.h"
#include "System/Config/ConfigHandler.h"
#include "System/Exceptions.h"
#include "System/FileSystem/FileHandler.h"
#include "Lua/LuaParser.h"
#include "Map/Ground.h"
#include "Sim/Misc/GlobalConstants.h"
#include "System/myMath.h"
#include "System/SafeUtil.h"
#include "System/StringUtil.h"
#include "System/Platform/Threading.h"
#include "System/Platform/Watchdog.h"
#include "System/Threading/SpringThreading.h"
#include "System/float3.h"
spring::recursive_mutex soundMutex;
CSound::CSound()
: masterVolume(0.0f)
, listenerNeedsUpdate(false)
, mute(false)
, appIsIconified(false)
, pitchAdjust(false)
, soundThreadQuit(false)
, canLoadDefs(false)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
masterVolume = configHandler->GetInt("snd_volmaster") * 0.01f;
pitchAdjust = configHandler->GetBool("PitchAdjust");
Channels::General->SetVolume(configHandler->GetInt("snd_volgeneral") * 0.01f);
Channels::UnitReply->SetVolume(configHandler->GetInt("snd_volunitreply") * 0.01f);
Channels::UnitReply->SetMaxConcurrent(1);
Channels::UnitReply->SetMaxEmits(1);
Channels::Battle->SetVolume(configHandler->GetInt("snd_volbattle") * 0.01f);
Channels::UserInterface->SetVolume(configHandler->GetInt("snd_volui") * 0.01f);
Channels::BGMusic->SetVolume(configHandler->GetInt("snd_volmusic") * 0.01f);
SoundBuffer::Initialise();
soundItems.push_back(nullptr);
soundThread = std::move(Threading::CreateNewThread(std::bind(&CSound::UpdateThread, this, configHandler->GetInt("MaxSounds"))));
configHandler->NotifyOnChange(this, {"snd_volmaster", "snd_eaxpreset", "snd_filter", "UseEFX", "snd_volgeneral", "snd_volunitreply", "snd_volbattle", "snd_volui", "snd_volmusic", "PitchAdjust"});
}
CSound::~CSound()
{
soundThreadQuit = true;
configHandler->RemoveObserver(this);
LOG("[%s][1] soundThread=%p", __func__, &soundThread);
if (soundThread.joinable())
soundThread.join();
LOG("[%s][2]", __func__);
for (SoundItem* item: soundItems)
delete item;
soundItems.clear();
SoundBuffer::Deinitialise();
LOG("[%s][3]", __func__);
}
bool CSound::HasSoundItem(const std::string& name) const
{
if (soundMap.find(name) != soundMap.end())
return true;
return (soundItemDefsMap.find(StringToLower(name)) != soundItemDefsMap.end());
}
size_t CSound::GetSoundId(const std::string& name)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (soundSources.empty())
return 0;
const auto it = soundMap.find(name);
if (it != soundMap.end())
return it->second;
const auto itemDefIt = soundItemDefsMap.find(StringToLower(name));
if (itemDefIt != soundItemDefsMap.end())
return MakeItemFromDef(itemDefIt->second);
if (LoadSoundBuffer(name) > 0) {
// maybe raw filename?
SoundItemNameMap temp = defaultItemNameMap;
temp["file"] = name;
return MakeItemFromDef(temp);
}
LOG_L(L_ERROR, "[Sound::%s] could not find sound \"%s\"", __func__, name.c_str());
return 0;
}
SoundItem* CSound::GetSoundItem(size_t id) const {
// id==0 is a special id and invalid
if (id == 0 || id >= soundItems.size())
return nullptr;
// WARNING:
// leaked to SoundSource::PlayAsync via AudioChannel::FindSourceAndPlay
// soundItems vector grows on-demand via GetSoundId -> MakeItemFromDef
return soundItems[id];
}
CSoundSource* CSound::GetNextBestSource(bool lock)
{
std::unique_lock<spring::recursive_mutex> lck(soundMutex, std::defer_lock);
if (lock)
lck.lock();
if (soundSources.empty())
return nullptr;
// find a free source; pointer remains valid until thread exits
for (CSoundSource& src: soundSources) {
if (!src.IsPlaying(false))
return &src;
}
// check the next best free source
CSoundSource* bestSrc = nullptr;
int bestPriority = INT_MAX;
for (CSoundSource& src: soundSources) {
#if 0
if (!src.IsPlaying(true))
return &src;
#endif
if (src.GetCurrentPriority() <= bestPriority) {
bestSrc = &src;
bestPriority = src.GetCurrentPriority();
}
}
return bestSrc;
}
void CSound::PitchAdjust(const float newPitch)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (pitchAdjust)
CSoundSource::SetPitch(newPitch);
}
void CSound::ConfigNotify(const std::string& key, const std::string& value)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (key == "snd_volmaster") {
masterVolume = std::atoi(value.c_str()) * 0.01f;
if (!mute && !appIsIconified)
alListenerf(AL_GAIN, masterVolume);
return;
}
if (key == "snd_eaxpreset") {
efx->SetPreset(value);
return;
}
if (key == "snd_filter") {
float gainlf = 1.0f;
float gainhf = 1.0f;
sscanf(value.c_str(), "%f %f", &gainlf, &gainhf);
efx->sfxProperties.filter_props_f[AL_LOWPASS_GAIN] = gainlf;
efx->sfxProperties.filter_props_f[AL_LOWPASS_GAINHF] = gainhf;
efx->CommitEffects();
return;
}
if (key == "UseEFX") {
if (std::atoi(value.c_str()) != 0)
efx->Enable();
else
efx->Disable();
return;
}
if (key == "snd_volgeneral") {
Channels::General->SetVolume(std::atoi(value.c_str()) * 0.01f);
return;
}
if (key == "snd_volunitreply") {
Channels::UnitReply->SetVolume(std::atoi(value.c_str()) * 0.01f);
return;
}
if (key == "snd_volbattle") {
Channels::Battle->SetVolume(std::atoi(value.c_str()) * 0.01f);
return;
}
if (key == "snd_volui") {
Channels::UserInterface->SetVolume(std::atoi(value.c_str()) * 0.01f);
return;
}
if (key == "snd_volmusic") {
Channels::BGMusic->SetVolume(std::atoi(value.c_str()) * 0.01f);
return;
}
if (key == "PitchAdjust") {
const bool tempPitchAdjust = (std::atoi(value.c_str()) != 0);
if (!tempPitchAdjust)
PitchAdjust(1.0f);
pitchAdjust = tempPitchAdjust;
return;
}
}
bool CSound::Mute()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if ((mute = !mute))
alListenerf(AL_GAIN, 0.0f);
else
alListenerf(AL_GAIN, masterVolume);
return mute;
}
void CSound::Iconified(bool state)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (appIsIconified != state && !mute) {
if (!state)
alListenerf(AL_GAIN, masterVolume);
else
alListenerf(AL_GAIN, 0.0);
}
appIsIconified = state;
}
void CSound::InitThread(int cfgMaxSounds)
{
assert(cfgMaxSounds > 0);
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
// if empty, open default device
std::string configDeviceName;
LOG("[Sound::%s][1]", __func__);
// call IsSet; we do not want to create a default for snd_device
if (configHandler->IsSet("snd_device"))
configDeviceName = configHandler->GetString("snd_device");
ALCdevice* device = nullptr;
ALCcontext* context = nullptr;
if (!configDeviceName.empty()) {
LOG("[Sound::%s][2] opening configured device \"%s\"", __func__, configDeviceName.c_str());
device = alcOpenDevice(configDeviceName.c_str());
}
if (device == nullptr) {
LOG("[Sound::%s][2] opening default device \"%s\"", __func__, alcGetString(nullptr, ALC_DEFAULT_DEVICE_SPECIFIER));
device = alcOpenDevice(nullptr);
}
if (device == nullptr) {
LOG_L(L_ERROR, "[%s][2] failed to open device", __func__);
// fall back to NullSound
soundThreadQuit = true;
return;
}
context = alcCreateContext(device, nullptr);
LOG("[Sound::%s][3] device=%p context=%p", __func__, device, context);
if (context == nullptr) {
LOG_L(L_ERROR, "[Sound::%s][3] failed to create context", __func__);
alcCloseDevice(device);
soundThreadQuit = true;
return;
}
if (!alcMakeContextCurrent(context)) {
LOG_L(L_ERROR, "[Sound::%s][3] failed to set current context", __func__);
alcDestroyContext(context);
alcCloseDevice(device);
soundThreadQuit = true;
return;
}
CheckError("[Sound::Init::MakeContextCurrent]");
{
LOG("[Sound::%s][4][OpenAL API Info]", __func__);
LOG(" Vendor: %s", (const char*) alGetString(AL_VENDOR));
LOG(" Version: %s", (const char*) alGetString(AL_VERSION));
LOG(" Renderer: %s", (const char*) alGetString(AL_RENDERER));
LOG(" AL Extensions: %s", (const char*) alGetString(AL_EXTENSIONS));
LOG(" ALC Extensions: %s", (const char*) alcGetString(device, ALC_EXTENSIONS));
// same as renderer
// LOG(" Implementation: %s", (const char*) alcGetString(device, ALC_DEVICE_SPECIFIER));
LOG(" Devices:");
const bool hasAllEnumExt = alcIsExtensionPresent(nullptr, "ALC_ENUMERATE_ALL_EXT");
const bool hasDefEnumExt = alcIsExtensionPresent(nullptr, "ALC_ENUMERATION_EXT");
if (hasAllEnumExt || hasDefEnumExt) {
const char* deviceSpecStr = alcGetString(nullptr, hasAllEnumExt? ALC_ALL_DEVICES_SPECIFIER: ALC_DEVICE_SPECIFIER);
while (*deviceSpecStr != '\0') {
LOG(" [%s]", deviceSpecStr);
while (*deviceSpecStr++ != '\0');
}
} else {
LOG(" [N/A]");
}
}
// generate sound sources; after this <soundSources> never changes size
GenSources(GetMaxMonoSources(device, cfgMaxSounds));
{
// set distance model (sound attenuation)
alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
alDopplerFactor(0.2f);
alListenerf(AL_GAIN, masterVolume);
CheckError("[Sound::Init]");
}
efx = new CEFX(device);
CheckError("[Sound::Init::EFX]");
}
canLoadDefs = true;
}
__FORCE_ALIGN_STACK__
void CSound::UpdateThread(int cfgMaxSounds)
{
LOG("[Sound::%s][1] cfgMaxSounds=%d", __func__, cfgMaxSounds);
Threading::SetAudioThread();
// InitThread can hang, pre-register
Watchdog::RegisterThread(WDT_AUDIO);
// OpenAL will create its own thread and copy the current's name
Threading::SetThreadName("openal");
InitThread(cfgMaxSounds);
Threading::SetThreadName("audio");
LOG("[Sound::%s][2]", __func__);
while (!soundThreadQuit) {
// update at roughly 30Hz
spring::this_thread::sleep_for(std::chrono::milliseconds(1000 / GAME_SPEED));
Watchdog::ClearTimer(WDT_AUDIO);
Update();
}
Watchdog::DeregisterThread(WDT_AUDIO);
LOG("[Sound::%s][3] efx=%p", __func__, efx);
soundSources.clear();
// must happen after sources and before context
spring::SafeDelete(efx);
ALCcontext* curContext = alcGetCurrentContext();
ALCdevice* curDevice = alcGetContextsDevice(curContext);
LOG("[Sound::%s][4] ctx=%p dev=%p", __func__, curContext, curDevice);
alcMakeContextCurrent(nullptr);
alcDestroyContext(curContext);
alcCloseDevice(curDevice);
LOG("[Sound::%s][5]", __func__);
}
void CSound::Update()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex); // lock
for (CSoundSource& source: soundSources)
source.Update();
CheckError("[Sound::Update]");
UpdateListenerReal();
}
size_t CSound::MakeItemFromDef(const SoundItemNameMap& itemDef)
{
//! MakeItemFromDef is private. Only caller is LoadSoundDefs and it sets the mutex itself.
// std::lock_guard<spring::recursive_mutex> lck(soundMutex);
const size_t newid = soundItems.size();
const auto defIt = itemDef.find("file");
if (defIt == itemDef.end())
return 0;
std::shared_ptr<SoundBuffer> buffer = SoundBuffer::GetById(LoadSoundBuffer(defIt->second));
if (!buffer)
return 0;
soundItems.push_back(new SoundItem(buffer, itemDef));
soundMap[(soundItems.back())->Name()] = newid;
return newid;
}
void CSound::UpdateListener(const float3& campos, const float3& camdir, const float3& camup)
{
myPos = campos;
camDir = camdir;
camUp = camup;
listenerNeedsUpdate = true;
}
void CSound::UpdateListenerReal()
{
// call from sound thread, cause OpenAL calls tend to cause L2 misses and so are slow (no reason to call them from mainthread)
if (!listenerNeedsUpdate)
return;
// not 100% threadsafe, but worst case we would skip a single listener update (and it runs at multiple Hz!)
listenerNeedsUpdate = false;
const float3 myPosInMeters = myPos * ELMOS_TO_METERS;
alListener3f(AL_POSITION, myPosInMeters.x, myPosInMeters.y, myPosInMeters.z);
// reduce the rolloff when the camera is high above the ground (so we still hear something in tab mode or far zoom)
// for altitudes up to and including 600 elmos, the rolloff is always clamped to 1
const float camHeight = std::max(1.0f, myPos.y - CGround::GetHeightAboveWater(myPos.x, myPos.z));
const float newMod = std::min(600.0f / camHeight, 1.0f);
CSoundSource::SetHeightRolloffModifer(newMod);
efx->SetHeightRolloffModifer(newMod);
// Result were bad with listener related doppler effects.
// The user experiences the camera/listener not as a world-interacting object.
// So changing sounds on camera movements were irritating, esp. because zooming with the mouse wheel
// often is faster than the speed of sound, causing very high frequencies.
// Note: soundsource related doppler effects are not deactivated by this! Flying cannon shoots still change their frequencies.
// Note2: by not updating the listener velocity soundsource related velocities are calculated wrong,
// so even if the camera is moving with a cannon shoot the frequency gets changed.
/*
const float3 velocity = (myPos - prevPos) / (lastFrameTime);
float3 velocityAvg = velocity * 0.6f + prevVelocity * 0.4f;
prevVelocity = velocityAvg;
velocityAvg *= ELMOS_TO_METERS;
velocityAvg.y *= 0.001f; //! scale vertical axis separatly (zoom with mousewheel is faster than speed of sound!)
velocityAvg *= 0.15f;
alListener3f(AL_VELOCITY, velocityAvg.x, velocityAvg.y, velocityAvg.z);
*/
ALfloat ListenerOri[] = {camDir.x, camDir.y, camDir.z, camUp.x, camUp.y, camUp.z};
alListenerfv(AL_ORIENTATION, ListenerOri);
CheckError("[Sound::UpdateListener]");
}
void CSound::PrintDebugInfo()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
LOG_L(L_DEBUG, "OpenAL Sound System:");
LOG_L(L_DEBUG, "# SoundSources: %i", (int)soundSources.size());
LOG_L(L_DEBUG, "# SoundBuffers: %i", (int)SoundBuffer::Count());
LOG_L(L_DEBUG, "# reserved for buffers: %i kB", (int)(SoundBuffer::AllocedSize() / 1024));
LOG_L(L_DEBUG, "# PlayRequests for empty sound: %i", numEmptyPlayRequests);
LOG_L(L_DEBUG, "# Samples disrupted: %i", numAbortedPlays);
LOG_L(L_DEBUG, "# SoundItems: %i", (int)soundItems.size());
}
bool CSound::LoadSoundDefsImpl(const std::string& fileName, const std::string& modes)
{
//! can be called from LuaUnsyncedCtrl too
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
LuaParser parser(fileName, modes, modes);
parser.Execute();
if (!parser.IsValid()) {
LOG_L(L_WARNING, "Could not load %s: %s", fileName.c_str(), parser.GetErrorLog().c_str());
return false;
}
{
const LuaTable& soundRoot = parser.GetRoot();
const LuaTable& soundItemTable = soundRoot.SubTable("SoundItems");
if (!soundItemTable.IsValid()) {
LOG_L(L_WARNING, "CSound(): could not parse SoundItems table in %s", fileName.c_str());
return false;
}
{
std::vector<std::string> keys;
soundItemTable.GetKeys(keys);
for (const std::string& name: keys) {
SoundItemNameMap bufmap;
const LuaTable buf(soundItemTable.SubTable(name));
buf.GetMap(bufmap);
bufmap["name"] = name;
const auto sit = soundItemDefsMap.find(name);
if (name == "default") {
defaultItemNameMap = bufmap;
defaultItemNameMap.erase("name"); //must be empty for default item
defaultItemNameMap.erase("file");
continue;
}
if (sit != soundItemDefsMap.end())
LOG_L(L_WARNING, "Sound %s gets overwritten by %s", name.c_str(), fileName.c_str());
if (!buf.KeyExists("file")) {
// no file, drop
LOG_L(L_WARNING, "Sound %s is missing file tag (ignoring)", name.c_str());
continue;
}
soundItemDefsMap[name] = bufmap;
if (buf.KeyExists("preload")) {
MakeItemFromDef(bufmap);
}
}
LOG(" parsed %i sounds from %s", (int)keys.size(), fileName.c_str());
}
}
//FIXME why do sounds w/o an own soundItemDef create (!=pointer) a new one from the defaultItemNameMap?
for (auto it = soundItemDefsMap.begin(); it != soundItemDefsMap.end(); ++it) {
SoundItemNameMap& snddef = it->second;
if (snddef.find("name") == snddef.end()) {
// uses defaultItemNameMap! update it!
const std::string file = snddef["file"];
snddef = defaultItemNameMap;
snddef["file"] = file;
}
}
return true;
}
//! only used internally, locked in caller's scope
size_t CSound::LoadSoundBuffer(const std::string& path)
{
const size_t id = SoundBuffer::GetId(path);
if (id > 0)
return id; // file is loaded already
// initial ctor Open is a no-op
static CFileHandler file("", "");
file.Close();
file.Open(path, SPRING_VFS_RAW_FIRST);
if (!file.FileExists()) {
file.Close();
LOG_L(L_ERROR, "[%s] unable to open audio file \"%s\"", __func__, path.c_str());
return 0;
}
// safe, caller locks
static std::vector<std::uint8_t> buf;
buf.clear();
buf.resize(file.FileSize());
// copy file into buffer
file.Read(buf.data(), file.FileSize());
file.Close();
std::shared_ptr<SoundBuffer> buffer(new SoundBuffer());
bool success = false;
const std::string ending = std::move(file.GetFileExt());
// TODO: load asynchronously
if (ending == "wav") {
success = buffer->LoadWAV(path, buf);
} else if (ending == "ogg") {
success = buffer->LoadVorbis(path, buf);
} else {
LOG_L(L_WARNING, "[%s] unknown audio format \"%s\"", __func__, ending.c_str());
}
CheckError("[Sound::LoadSoundBuffer]");
if (!success) {
LOG_L(L_WARNING, "[%s] failed to load file \"%s\"", __func__, path.c_str());
return 0;
}
return (SoundBuffer::Insert(buffer));
}
void CSound::NewFrame()
{
Channels::General->UpdateFrame();
Channels::Battle->UpdateFrame();
Channels::UnitReply->UpdateFrame();
Channels::UserInterface->UpdateFrame();
}
// try to get the maximum number of supported sounds; feeds into GenSources
int CSound::GetMaxMonoSources(ALCdevice* device, int cfgMaxSounds)
{
ALCint size;
alcGetIntegerv(device, ALC_ATTRIBUTES_SIZE, 1, &size);
std::vector<ALCint> attrs(size);
alcGetIntegerv(device, ALC_ALL_ATTRIBUTES, size, &attrs[0]);
for (size_t i = 0; i < (attrs.size() - 1); ++i) {
if (attrs[i] != ALC_MONO_SOURCES)
continue;
const int alMaxSounds = attrs[i + 1];
if (alMaxSounds < cfgMaxSounds)
LOG_L(L_WARNING, "[Sound::%s] cfgMaxSounds=%d but alMaxSounds=%d", __func__, cfgMaxSounds, alMaxSounds);
return std::min(cfgMaxSounds, alMaxSounds);
}
return cfgMaxSounds;
}
void CSound::GenSources(int alMaxSounds)
{
soundSources.clear();
soundSources.reserve(alMaxSounds);
for (int i = 0; i < alMaxSounds; i++) {
soundSources.emplace_back();
if (soundSources[i].IsValid())
continue;
soundSources.pop_back();
// should be unreachable
LOG_L(L_WARNING, "[Sound::%s] alMaxSounds=%d but numSources=%d", __func__, alMaxSounds, int(soundSources.size()));
break;
}
}
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