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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "AudioChannel.h"
#include "ALShared.h"
#include "SoundItem.h"
#include "SoundSource.h"
#include "Game/GlobalUnsynced.h"
#include "Sim/Misc/GuiSoundSet.h"
#include "Sim/Objects/WorldObject.h"
#include "System/Sound/ISound.h"
#include "System/Sound/SoundLog.h"
#include "System/Threading/SpringThreading.h"
#include <climits>
extern spring::recursive_mutex soundMutex;
void AudioChannel::SetVolume(float newVolume)
{
volume = std::max(newVolume, 0.0f);
if (curSources.empty())
return;
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
for (auto it = curSources.begin(); it != curSources.end(); ++it) {
(*it)->UpdateVolume();
}
CheckError("AudioChannel::SetVolume");
}
void AudioChannel::Enable(bool newState)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if ((enabled = newState))
return;
SetVolume(0.0f);
}
void AudioChannel::SoundSourceFinished(CSoundSource* sndSource)
{
if (curStreamSrc == sndSource) {
if (!streamQueue.empty()) {
StreamPlay(streamQueue.back(), false);
streamQueue.pop_back();
} else {
curStreamSrc = nullptr;
}
}
curSources.erase(sndSource);
}
void AudioChannel::FindSourceAndPlay(size_t id, const float3& pos, const float3& velocity, float volume, bool relative)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (!enabled)
return;
if (volume <= 0.0f)
return;
// generate the sound item
SoundItem* sndItem = sound->GetSoundItem(id);
if (sndItem == nullptr) {
sound->numEmptyPlayRequests++;
return;
}
// check distance to listener
if (pos.distance(sound->GetListenerPos()) > sndItem->MaxDistance()) {
if (!relative)
return;
LOG("CSound::PlaySample: maxdist ignored for relative playback: %s", sndItem->Name().c_str());
}
// don't spam to many sounds per frame
if (emitsThisFrame >= emitsPerFrame)
return;
emitsThisFrame++;
// check if the sound item is already played
if (curSources.size() >= maxConcurrentSources) {
CSoundSource* src = nullptr;
int prio = INT_MAX;
for (auto it = curSources.begin(); it != curSources.end(); ++it) {
if ((*it)->GetCurrentPriority() < prio) {
src = *it;
prio = src->GetCurrentPriority();
}
}
if (src == nullptr || prio > sndItem->GetPriority()) {
LOG_L(L_DEBUG, "CSound::PlaySample: Max concurrent sounds in channel reached! Dropping playback!");
return;
}
src->Stop();
}
// find a sound source to play the item in
CSoundSource* sndSource = sound->GetNextBestSource();
if (sndSource == nullptr || (sndSource->GetCurrentPriority() >= sndItem->GetPriority())) {
LOG_L(L_DEBUG, "CSound::PlaySample: Max sounds reached! Dropping playback!");
return;
}
if (sndSource->IsPlaying())
sound->numAbortedPlays++;
// play the sound item
sndSource->PlayAsync(this, sndItem, pos, velocity, volume, relative);
curSources.insert(sndSource);
}
void AudioChannel::PlaySample(size_t id, float volume)
{
FindSourceAndPlay(id, -FwdVector, ZeroVector, volume, true);
}
void AudioChannel::PlaySample(size_t id, const float3& pos, float volume)
{
FindSourceAndPlay(id, pos, ZeroVector, volume, false);
}
void AudioChannel::PlaySample(size_t id, const float3& pos, const float3& velocity, float volume)
{
FindSourceAndPlay(id, pos, velocity, volume, false);
}
void AudioChannel::PlaySample(size_t id, const CWorldObject* obj, float volume)
{
FindSourceAndPlay(id, obj->pos, obj->speed, volume, false);
}
void AudioChannel::PlayRandomSample(const GuiSoundSet& soundSet, const CWorldObject* obj)
{
PlayRandomSample(soundSet, obj->pos);
}
void AudioChannel::PlayRandomSample(const GuiSoundSet& soundSet, const float3& pos)
{
if (soundSet.sounds.empty())
return;
const int soundIdx = guRNG.NextInt(soundSet.sounds.size());
const int soundID = soundSet.getID(soundIdx);
const float soundVol = soundSet.getVolume(soundIdx);
PlaySample(soundID, pos, soundVol);
}
void AudioChannel::StreamPlay(const std::string& filepath, float volume, bool enqueue)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (!enabled)
return;
if (curStreamSrc != nullptr && enqueue) {
if (streamQueue.size() > MAX_STREAM_QUEUESIZE) {
streamQueue.resize(MAX_STREAM_QUEUESIZE);
streamQueue.pop_back(); // make room for the new item
}
streamQueue.emplace_back(filepath, volume);
return;
}
if (curStreamSrc == nullptr)
curStreamSrc = sound->GetNextBestSource(); // may return 0 if no sources available
if (curStreamSrc == nullptr)
return;
// insert first, PlayStream may invoke Stop immediately thus setting curStreamSrc to NULL
curSources.insert(curStreamSrc);
curStreamSrc->PlayStream(this, filepath, volume);
}
void AudioChannel::StreamPause()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (curStreamSrc != nullptr)
curStreamSrc->StreamPause();
}
void AudioChannel::StreamStop()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (curStreamSrc != nullptr)
curStreamSrc->StreamStop();
}
float AudioChannel::StreamGetTime()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (curStreamSrc != nullptr)
return curStreamSrc->GetStreamTime();
return 0.0f;
}
float AudioChannel::StreamGetPlayTime()
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (curStreamSrc != nullptr)
return curStreamSrc->GetStreamPlayTime();
return 0.0f;
}
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