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Replace process-spawning audio with miniaudio for non-blocking playback

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Eliminates severe stuttering from fork/exec + disk I/O by streaming audio directly from memory using miniaudio library.
This commit is contained in:
Kelsi 2026-02-09 00:40:50 -08:00
parent c047446fb7
commit bd3f1921d1
11 changed files with 96445 additions and 133 deletions
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52
src/audio/footstep_manager.cpp
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@ -1,10 +1,8 @@
#include "audio/footstep_manager.hpp"
#include "audio/audio_engine.hpp"
#include "pipeline/asset_manager.hpp"
#include "core/logger.hpp"
#include "platform/process.hpp"
#include <algorithm>
#include <cstdio>
#include <fstream>
#include <string>
namespace wowee {
@ -67,8 +65,6 @@ bool FootstepManager::initialize(pipeline::AssetManager* assets) {
}
void FootstepManager::shutdown() {
stopCurrentProcess();
std::remove(tempFilePath.c_str());
for (auto& surface : surfaces) {
surface.clips.clear();
}
@ -77,14 +73,19 @@ void FootstepManager::shutdown() {
}
void FootstepManager::update(float) {
reapFinishedProcess();
// No longer needed - AudioEngine handles cleanup internally
}
void FootstepManager::playFootstep(FootstepSurface surface, bool sprinting) {
if (!assetManager || sampleCount == 0) {
return;
}
reapFinishedProcess();
// Check if AudioEngine is initialized
if (!AudioEngine::instance().isInitialized()) {
return;
}
playRandomStep(surface, sprinting);
}
@ -111,17 +112,6 @@ void FootstepManager::preloadSurface(FootstepSurface surface, const std::vector<
}
}
void FootstepManager::stopCurrentProcess() {
platform::killProcess(playerPid);
}
void FootstepManager::reapFinishedProcess() {
if (playerPid == INVALID_PROCESS) {
return;
}
platform::isProcessRunning(playerPid);
}
bool FootstepManager::playRandomStep(FootstepSurface surface, bool sprinting) {
auto now = std::chrono::steady_clock::now();
if (lastPlayTime.time_since_epoch().count() != 0) {
@ -140,22 +130,11 @@ bool FootstepManager::playRandomStep(FootstepSurface surface, bool sprinting) {
}
}
// Keep one active step at a time to avoid ffplay process buildup.
if (playerPid != INVALID_PROCESS) {
return false;
}
// Pick a random clip
std::uniform_int_distribution<size_t> clipDist(0, list.size() - 1);
const Sample& sample = list[clipDist(rng)];
std::ofstream out(tempFilePath, std::ios::binary);
if (!out) {
return false;
}
out.write(reinterpret_cast<const char*>(sample.data.data()), static_cast<std::streamsize>(sample.data.size()));
out.close();
// Subtle variation for less repetitive cadence.
// Subtle variation for less repetitive cadence
std::uniform_real_distribution<float> pitchDist(0.97f, 1.05f);
std::uniform_real_distribution<float> volumeDist(0.92f, 1.00f);
float pitch = pitchDist(rng);
@ -163,15 +142,10 @@ bool FootstepManager::playRandomStep(FootstepSurface surface, bool sprinting) {
if (volume > 1.0f) volume = 1.0f;
if (volume < 0.1f) volume = 0.1f;
std::string filter = "asetrate=44100*" + std::to_string(pitch) +
",aresample=44100,volume=" + std::to_string(volume);
// Play using AudioEngine (non-blocking, no process spawn!)
bool success = AudioEngine::instance().playSound2D(sample.data, volume, pitch);
playerPid = platform::spawnProcess({
"-nodisp", "-autoexit", "-loglevel", "quiet",
"-af", filter, tempFilePath
});
if (playerPid != INVALID_PROCESS) {
if (success) {
lastPlayTime = now;
return true;
}