From d1d0d891fa8556de2b1535343d6ffa19a3749240 Mon Sep 17 00:00:00 2001
From: Gregor Klevze <gregor@klevze.si>
Date: Wed, 10 Dec 2025 18:35:05 +0100
Subject: [PATCH] fix. sound fx

---
 src/audio/SoundEffect.cpp | 66 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 65 insertions(+), 1 deletion(-)

diff --git a/src/audio/SoundEffect.cpp b/src/audio/SoundEffect.cpp
index 24317bd..2a34b66 100644
--- a/src/audio/SoundEffect.cpp
+++ b/src/audio/SoundEffect.cpp
@@ -20,6 +20,9 @@
 #pragma comment(lib, "mfuuid.lib")
 #pragma comment(lib, "ole32.lib")
 using Microsoft::WRL::ComPtr;
+#elif defined(__APPLE__)
+#include <AudioToolbox/AudioToolbox.h>
+#include <CoreFoundation/CoreFoundation.h>
 #endif
 
 // SoundEffect implementation
@@ -143,7 +146,7 @@ bool SoundEffect::loadWAV(const std::string& filePath) {
 }
 
 bool SoundEffect::loadMP3(const std::string& filePath) {
-#ifdef _WIN32
+#if defined(_WIN32)
     static bool mfInitialized = false;
     if (!mfInitialized) {
         if (FAILED(MFStartup(MF_VERSION))) {
@@ -222,6 +225,67 @@ bool SoundEffect::loadMP3(const std::string& filePath) {
     channels = 2;
     sampleRate = 44100;
     return true;
+#elif defined(__APPLE__)
+    CFURLRef url = CFURLCreateFromFileSystemRepresentation(nullptr, reinterpret_cast<const UInt8*>(filePath.c_str()), filePath.size(), false);
+    if (!url) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "[SoundEffect] Failed to create URL for %s", filePath.c_str());
+        return false;
+    }
+
+    ExtAudioFileRef audioFile = nullptr;
+    OSStatus status = ExtAudioFileOpenURL(url, &audioFile);
+    CFRelease(url);
+    if (status != noErr || !audioFile) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "[SoundEffect] ExtAudioFileOpenURL failed (%d) for %s", static_cast<int>(status), filePath.c_str());
+        return false;
+    }
+
+    AudioStreamBasicDescription clientFormat{};
+    clientFormat.mSampleRate = 44100.0;
+    clientFormat.mFormatID = kAudioFormatLinearPCM;
+    clientFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
+    clientFormat.mBitsPerChannel = 16;
+    clientFormat.mChannelsPerFrame = 2;
+    clientFormat.mFramesPerPacket = 1;
+    clientFormat.mBytesPerFrame = (clientFormat.mBitsPerChannel / 8) * clientFormat.mChannelsPerFrame;
+    clientFormat.mBytesPerPacket = clientFormat.mBytesPerFrame * clientFormat.mFramesPerPacket;
+
+    status = ExtAudioFileSetProperty(audioFile, kExtAudioFileProperty_ClientDataFormat, sizeof(clientFormat), &clientFormat);
+    if (status != noErr) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "[SoundEffect] Failed to set client format (%d) for %s", static_cast<int>(status), filePath.c_str());
+        ExtAudioFileDispose(audioFile);
+        return false;
+    }
+
+    const UInt32 framesPerBuffer = 2048;
+    std::vector<int16_t> buffer(framesPerBuffer * clientFormat.mChannelsPerFrame);
+    while (true) {
+        AudioBufferList abl{};
+        abl.mNumberBuffers = 1;
+        abl.mBuffers[0].mNumberChannels = clientFormat.mChannelsPerFrame;
+        abl.mBuffers[0].mDataByteSize = framesPerBuffer * clientFormat.mBytesPerFrame;
+        abl.mBuffers[0].mData = buffer.data();
+
+        UInt32 framesToRead = framesPerBuffer;
+        status = ExtAudioFileRead(audioFile, &framesToRead, &abl);
+        if (status != noErr) {
+            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "[SoundEffect] ExtAudioFileRead failed (%d) for %s", static_cast<int>(status), filePath.c_str());
+            ExtAudioFileDispose(audioFile);
+            return false;
+        }
+
+        if (framesToRead == 0) {
+            break; // EOF
+        }
+
+        size_t samplesRead = static_cast<size_t>(framesToRead) * clientFormat.mChannelsPerFrame;
+        pcmData.insert(pcmData.end(), buffer.data(), buffer.data() + samplesRead);
+    }
+
+    ExtAudioFileDispose(audioFile);
+    channels = static_cast<int>(clientFormat.mChannelsPerFrame);
+    sampleRate = static_cast<int>(clientFormat.mSampleRate);
+    return !pcmData.empty();
 #else
     SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "[SoundEffect] MP3 support not available on this platform");
     return false;