reestructuració

source/core/audio/audio.cpp

@@ -0,0 +1,162 @@
+#include "audio.hpp"
+
+#include <SDL3/SDL.h>  // Para SDL_LogInfo, SDL_LogCategory, SDL_G...
+
+#include <algorithm>  // Para clamp
+#include <iostream>   // Para std::cout
+
+// Implementación de stb_vorbis (debe estar ANTES de incluir jail_audio.hpp).
+// clang-format off
+#undef STB_VORBIS_HEADER_ONLY
+#include "external/stb_vorbis.h"
+// stb_vorbis.h filtra les macros L, C i R (i PLAYBACK_*) al TU. Les netegem
+// perquè xocarien amb noms de paràmetres de plantilla en json.hpp i altres.
+#undef L
+#undef C
+#undef R
+#undef PLAYBACK_MONO
+#undef PLAYBACK_LEFT
+#undef PLAYBACK_RIGHT
+// clang-format on
+
+#include "external/jail_audio.hpp"  // Para JA_FadeOutMusic, JA_Init, JA_PauseM...
+#include "options.hpp"              // Para AudioOptions, audio, MusicOptions
+#include "resource.hpp"             // Para Resource
+
+// Singleton
+Audio* Audio::instance = nullptr;
+
+// Inicializa la instancia única del singleton
+void Audio::init() { Audio::instance = new Audio(); }
+
+// Libera la instancia
+void Audio::destroy() { delete Audio::instance; }
+
+// Obtiene la instancia
+auto Audio::get() -> Audio* { return Audio::instance; }
+
+// Constructor
+Audio::Audio() { initSDLAudio(); }
+
+// Destructor
+Audio::~Audio() {
+    JA_Quit();
+}
+
+// Método principal
+void Audio::update() {
+    JA_Update();
+}
+
+// Reproduce la música
+void Audio::playMusic(const std::string& name, const int loop) {
+    music_.name = name;
+    music_.loop = (loop != 0);
+
+    if (music_enabled_ && music_.state != MusicState::PLAYING) {
+        JA_PlayMusic(Resource::get()->getMusic(name), loop);
+        music_.state = MusicState::PLAYING;
+    }
+}
+
+// Pausa la música
+void Audio::pauseMusic() {
+    if (music_enabled_ && music_.state == MusicState::PLAYING) {
+        JA_PauseMusic();
+        music_.state = MusicState::PAUSED;
+    }
+}
+
+// Continua la música pausada
+void Audio::resumeMusic() {
+    if (music_enabled_ && music_.state == MusicState::PAUSED) {
+        JA_ResumeMusic();
+        music_.state = MusicState::PLAYING;
+    }
+}
+
+// Detiene la música
+void Audio::stopMusic() {
+    if (music_enabled_) {
+        JA_StopMusic();
+        music_.state = MusicState::STOPPED;
+    }
+}
+
+// Reproduce un sonido
+void Audio::playSound(const std::string& name, Group group) const {
+    if (sound_enabled_) {
+        JA_PlaySound(Resource::get()->getSound(name), 0, static_cast<int>(group));
+    }
+}
+
+// Detiene todos los sonidos
+void Audio::stopAllSounds() const {
+    if (sound_enabled_) {
+        JA_StopChannel(-1);
+    }
+}
+
+// Realiza un fundido de salida de la música
+void Audio::fadeOutMusic(int milliseconds) const {
+    if (music_enabled_ && getRealMusicState() == MusicState::PLAYING) {
+        JA_FadeOutMusic(milliseconds);
+    }
+}
+
+// Consulta directamente el estado real de la música en jailaudio
+auto Audio::getRealMusicState() -> MusicState {
+    JA_Music_state ja_state = JA_GetMusicState();
+    switch (ja_state) {
+        case JA_MUSIC_PLAYING:
+            return MusicState::PLAYING;
+        case JA_MUSIC_PAUSED:
+            return MusicState::PAUSED;
+        case JA_MUSIC_STOPPED:
+        case JA_MUSIC_INVALID:
+        case JA_MUSIC_DISABLED:
+        default:
+            return MusicState::STOPPED;
+    }
+}
+
+// Establece el volumen de los sonidos
+void Audio::setSoundVolume(int sound_volume, Group group) const {
+    if (sound_enabled_) {
+        sound_volume = std::clamp(sound_volume, MIN_VOLUME, MAX_VOLUME);
+        const float CONVERTED_VOLUME = (sound_volume / 100.0F) * (Options::audio.volume / 100.0F);
+        JA_SetSoundVolume(CONVERTED_VOLUME, static_cast<int>(group));
+    }
+}
+
+// Establece el volumen de la música
+void Audio::setMusicVolume(int music_volume) const {
+    if (music_enabled_) {
+        music_volume = std::clamp(music_volume, MIN_VOLUME, MAX_VOLUME);
+        const float CONVERTED_VOLUME = (music_volume / 100.0F) * (Options::audio.volume / 100.0F);
+        JA_SetMusicVolume(CONVERTED_VOLUME);
+    }
+}
+
+// Aplica la configuración
+void Audio::applySettings() {
+    enable(Options::audio.enabled);
+}
+
+// Establecer estado general
+void Audio::enable(bool value) {
+    enabled_ = value;
+
+    setSoundVolume(enabled_ ? Options::audio.sound.volume : MIN_VOLUME);
+    setMusicVolume(enabled_ ? Options::audio.music.volume : MIN_VOLUME);
+}
+
+// Inicializa SDL Audio
+void Audio::initSDLAudio() {
+    if (!SDL_Init(SDL_INIT_AUDIO)) {
+        std::cout << "SDL_AUDIO could not initialize! SDL Error: " << SDL_GetError() << '\n';
+    } else {
+        JA_Init(FREQUENCY, SDL_AUDIO_S16LE, 2);
+        enable(Options::audio.enabled);
+    }
+}

source/core/audio/audio.hpp

@@ -0,0 +1,111 @@
+#pragma once
+
+#include <string>   // Para string
+#include <utility>  // Para move
+
+// --- Clase Audio: gestor de audio (singleton) ---
+class Audio {
+   public:
+    // --- Enums ---
+    enum class Group : int {
+        ALL = -1,      // Todos los grupos
+        GAME = 0,      // Sonidos del juego
+        INTERFACE = 1  // Sonidos de la interfaz
+    };
+
+    enum class MusicState {
+        PLAYING,  // Reproduciendo música
+        PAUSED,   // Música pausada
+        STOPPED,  // Música detenida
+    };
+
+    // --- Constantes ---
+    static constexpr int MAX_VOLUME = 100;   // Volumen máximo
+    static constexpr int MIN_VOLUME = 0;     // Volumen mínimo
+    static constexpr int FREQUENCY = 48000;  // Frecuencia de audio
+
+    // --- Métodos de singleton ---
+    static void init();                               // Inicializa el objeto Audio
+    static void destroy();                            // Libera el objeto Audio
+    static auto get() -> Audio*;                      // Obtiene el puntero al objeto Audio
+    Audio(const Audio&) = delete;                     // Evitar copia
+    auto operator=(const Audio&) -> Audio& = delete;  // Evitar asignación
+
+    // --- Método principal ---
+    static void update();
+
+    // --- Control de Música ---
+    void playMusic(const std::string& name, int loop = -1);  // Reproducir música en bucle
+    void pauseMusic();                                       // Pausar reproducción de música
+    void resumeMusic();                                      // Continua la música pausada
+    void stopMusic();                                        // Detener completamente la música
+    void fadeOutMusic(int milliseconds) const;               // Fundido de salida de la música
+
+    // --- Control de Sonidos ---
+    void playSound(const std::string& name, Group group = Group::GAME) const;  // Reproducir sonido puntual
+    void stopAllSounds() const;                                                // Detener todos los sonidos
+
+    // --- Configuración General ---
+    void enable(bool value);                        // Establecer estado general
+    void toggleEnabled() { enabled_ = !enabled_; }  // Alternar estado general
+    void applySettings();                           // Aplica la configuración
+
+    // --- Configuración de Sonidos ---
+    void enableSound() { sound_enabled_ = true; }             // Habilitar sonidos
+    void disableSound() { sound_enabled_ = false; }           // Deshabilitar sonidos
+    void enableSound(bool value) { sound_enabled_ = value; }  // Establecer estado de sonidos
+    void toggleSound() { sound_enabled_ = !sound_enabled_; }  // Alternar estado de sonidos
+
+    // --- Configuración de Música ---
+    void enableMusic() { music_enabled_ = true; }             // Habilitar música
+    void disableMusic() { music_enabled_ = false; }           // Deshabilitar música
+    void enableMusic(bool value) { music_enabled_ = value; }  // Establecer estado de música
+    void toggleMusic() { music_enabled_ = !music_enabled_; }  // Alternar estado de música
+
+    // --- Control de Volumen ---
+    void setSoundVolume(int volume, Group group = Group::ALL) const;  // Ajustar volumen de efectos
+    void setMusicVolume(int volume) const;                            // Ajustar volumen de música
+
+    // --- Getters para debug ---
+    [[nodiscard]] auto isEnabled() const -> bool { return enabled_; }
+    [[nodiscard]] auto isSoundEnabled() const -> bool { return sound_enabled_; }
+    [[nodiscard]] auto isMusicEnabled() const -> bool { return music_enabled_; }
+    [[nodiscard]] auto getMusicState() const -> MusicState { return music_.state; }
+    [[nodiscard]] static auto getRealMusicState() -> MusicState;  // Consulta directamente a jailaudio
+    [[nodiscard]] auto getCurrentMusicName() const -> const std::string& { return music_.name; }
+
+   private:
+    // --- Estructuras privadas ---
+    struct Music {
+        MusicState state;  // Estado actual de la música (reproduciendo, detenido, en pausa)
+        std::string name;  // Última pista de música reproducida
+        bool loop;         // Indica si la última pista de música se debe reproducir en bucle
+
+        // Constructor para inicializar la música con valores predeterminados
+        Music()
+            : state(MusicState::STOPPED),
+              loop(false) {}
+
+        // Constructor para inicializar con valores específicos
+        Music(MusicState init_state, std::string init_name, bool init_loop)
+            : state(init_state),
+              name(std::move(init_name)),
+              loop(init_loop) {}
+    };
+
+    // --- Variables de estado ---
+    Music music_;                // Estado de la música
+    bool enabled_ = true;        // Estado general del audio
+    bool sound_enabled_ = true;  // Estado de los efectos de sonido
+    bool music_enabled_ = true;  // Estado de la música
+
+    // --- Métodos internos ---
+    void initSDLAudio();  // Inicializa SDL Audio
+
+    // --- Constructores y destructor privados (singleton) ---
+    Audio();   // Constructor privado
+    ~Audio();  // Destructor privado
+
+    // --- Instancia singleton ---
+    static Audio* instance;  // Instancia única de Audio
+};

source/core/audio/jail_audio.hpp

@@ -0,0 +1,557 @@
+#pragma once
+
+// --- Includes ---
+#include <SDL3/SDL.h>
+#include <stdint.h>  // Para uint32_t, uint8_t
+#include <stdio.h>   // Para NULL, fseek, printf, fclose, fopen, fread, ftell, FILE, SEEK_END, SEEK_SET
+#include <stdlib.h>  // Para free, malloc
+#include <string.h>  // Para strcpy, strlen
+
+#include <iostream>  // Para std::cout
+
+#define STB_VORBIS_HEADER_ONLY
+#include "external/stb_vorbis.h"  // Para stb_vorbis_decode_memory
+
+// --- Public Enums ---
+enum JA_Channel_state { JA_CHANNEL_INVALID,
+    JA_CHANNEL_FREE,
+    JA_CHANNEL_PLAYING,
+    JA_CHANNEL_PAUSED,
+    JA_SOUND_DISABLED };
+enum JA_Music_state { JA_MUSIC_INVALID,
+    JA_MUSIC_PLAYING,
+    JA_MUSIC_PAUSED,
+    JA_MUSIC_STOPPED,
+    JA_MUSIC_DISABLED };
+
+// --- Struct Definitions ---
+#define JA_MAX_SIMULTANEOUS_CHANNELS 20
+#define JA_MAX_GROUPS 2
+
+struct JA_Sound_t {
+    SDL_AudioSpec spec{SDL_AUDIO_S16, 2, 48000};
+    Uint32 length{0};
+    Uint8* buffer{NULL};
+};
+
+struct JA_Channel_t {
+    JA_Sound_t* sound{nullptr};
+    int pos{0};
+    int times{0};
+    int group{0};
+    SDL_AudioStream* stream{nullptr};
+    JA_Channel_state state{JA_CHANNEL_FREE};
+};
+
+struct JA_Music_t {
+    SDL_AudioSpec spec{SDL_AUDIO_S16, 2, 48000};
+
+    // OGG comprimit en memòria. Propietat nostra; es copia des del fitxer una
+    // sola vegada en JA_LoadMusic i es descomprimix en chunks per streaming.
+    Uint8* ogg_data{nullptr};
+    Uint32 ogg_length{0};
+    stb_vorbis* vorbis{nullptr};  // Handle del decoder, viu tot el cicle del JA_Music_t
+
+    char* filename{nullptr};
+
+    int times{0};  // Loops restants (-1 = infinit, 0 = un sol play)
+    SDL_AudioStream* stream{nullptr};
+    JA_Music_state state{JA_MUSIC_INVALID};
+};
+
+// --- Internal Global State ---
+// Marcado 'inline' (C++17) para asegurar una única instancia.
+
+inline JA_Music_t* current_music{nullptr};
+inline JA_Channel_t channels[JA_MAX_SIMULTANEOUS_CHANNELS];
+
+inline SDL_AudioSpec JA_audioSpec{SDL_AUDIO_S16, 2, 48000};
+inline float JA_musicVolume{1.0f};
+inline float JA_soundVolume[JA_MAX_GROUPS];
+inline bool JA_musicEnabled{true};
+inline bool JA_soundEnabled{true};
+inline SDL_AudioDeviceID sdlAudioDevice{0};
+
+inline bool fading{false};
+inline int fade_start_time{0};
+inline int fade_duration{0};
+inline float fade_initial_volume{0.0f};  // Corregido de 'int' a 'float'
+
+// --- Forward Declarations ---
+inline void JA_StopMusic();
+inline void JA_StopChannel(const int channel);
+inline int JA_PlaySoundOnChannel(JA_Sound_t* sound, const int channel, const int loop = 0, const int group = 0);
+
+// --- Music streaming internals ---
+// Bytes-per-sample per canal (sempre s16)
+static constexpr int JA_MUSIC_BYTES_PER_SAMPLE = 2;
+// Quants shorts decodifiquem per crida a get_samples_short_interleaved.
+// 8192 shorts = 4096 samples/channel en estèreo ≈ 85ms de so a 48kHz.
+static constexpr int JA_MUSIC_CHUNK_SHORTS = 8192;
+// Umbral d'audio per davant del cursor de reproducció. Mantenim ≥ 0.5 s a
+// l'SDL_AudioStream per absorbir jitter de frame i evitar underruns.
+static constexpr float JA_MUSIC_LOW_WATER_SECONDS = 0.5f;
+
+// Decodifica un chunk del vorbis i el volca a l'stream. Retorna samples
+// decodificats per canal (0 = EOF de l'stream vorbis).
+inline int JA_FeedMusicChunk(JA_Music_t* music) {
+    if (!music || !music->vorbis || !music->stream) return 0;
+
+    short chunk[JA_MUSIC_CHUNK_SHORTS];
+    const int channels = music->spec.channels;
+    const int samples_per_channel = stb_vorbis_get_samples_short_interleaved(
+        music->vorbis,
+        channels,
+        chunk,
+        JA_MUSIC_CHUNK_SHORTS);
+    if (samples_per_channel <= 0) return 0;
+
+    const int bytes = samples_per_channel * channels * JA_MUSIC_BYTES_PER_SAMPLE;
+    SDL_PutAudioStreamData(music->stream, chunk, bytes);
+    return samples_per_channel;
+}
+
+// Reompli l'stream fins que tinga ≥ JA_MUSIC_LOW_WATER_SECONDS bufferats.
+// En arribar a EOF del vorbis, aplica el loop (times) o deixa drenar.
+inline void JA_PumpMusic(JA_Music_t* music) {
+    if (!music || !music->vorbis || !music->stream) return;
+
+    const int bytes_per_second = music->spec.freq * music->spec.channels * JA_MUSIC_BYTES_PER_SAMPLE;
+    const int low_water_bytes = static_cast<int>(JA_MUSIC_LOW_WATER_SECONDS * static_cast<float>(bytes_per_second));
+
+    while (SDL_GetAudioStreamAvailable(music->stream) < low_water_bytes) {
+        const int decoded = JA_FeedMusicChunk(music);
+        if (decoded > 0) continue;
+
+        // EOF: si queden loops, rebobinar; si no, tallar i deixar drenar.
+        if (music->times != 0) {
+            stb_vorbis_seek_start(music->vorbis);
+            if (music->times > 0) music->times--;
+        } else {
+            break;
+        }
+    }
+}
+
+// --- Core Functions ---
+
+inline void JA_Update() {
+    if (JA_musicEnabled && current_music && current_music->state == JA_MUSIC_PLAYING) {
+        if (fading) {
+            int time = SDL_GetTicks();
+            if (time > (fade_start_time + fade_duration)) {
+                fading = false;
+                JA_StopMusic();
+                return;
+            } else {
+                const int time_passed = time - fade_start_time;
+                const float percent = (float)time_passed / (float)fade_duration;
+                SDL_SetAudioStreamGain(current_music->stream, JA_musicVolume * (1.0 - percent));
+            }
+        }
+
+        // Streaming: rellenem l'stream fins al low-water-mark i parem si el
+        // vorbis s'ha esgotat i no queden loops.
+        JA_PumpMusic(current_music);
+        if (current_music->times == 0 && SDL_GetAudioStreamAvailable(current_music->stream) == 0) {
+            JA_StopMusic();
+        }
+    }
+
+    if (JA_soundEnabled) {
+        for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; ++i)
+            if (channels[i].state == JA_CHANNEL_PLAYING) {
+                if (channels[i].times != 0) {
+                    if ((Uint32)SDL_GetAudioStreamAvailable(channels[i].stream) < (channels[i].sound->length / 2)) {
+                        SDL_PutAudioStreamData(channels[i].stream, channels[i].sound->buffer, channels[i].sound->length);
+                        if (channels[i].times > 0) channels[i].times--;
+                    }
+                } else {
+                    if (SDL_GetAudioStreamAvailable(channels[i].stream) == 0) JA_StopChannel(i);
+                }
+            }
+    }
+}
+
+inline void JA_Init(const int freq, const SDL_AudioFormat format, const int num_channels) {
+#ifdef _DEBUG
+    SDL_SetLogPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_DEBUG);
+#endif
+
+    JA_audioSpec = {format, num_channels, freq};
+    if (sdlAudioDevice) SDL_CloseAudioDevice(sdlAudioDevice);  // Corregido: !sdlAudioDevice -> sdlAudioDevice
+    sdlAudioDevice = SDL_OpenAudioDevice(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &JA_audioSpec);
+    if (sdlAudioDevice == 0) std::cout << "Failed to initialize SDL audio!" << '\n';
+    for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; ++i) channels[i].state = JA_CHANNEL_FREE;
+    for (int i = 0; i < JA_MAX_GROUPS; ++i) JA_soundVolume[i] = 0.5f;
+}
+
+inline void JA_Quit() {
+    if (sdlAudioDevice) SDL_CloseAudioDevice(sdlAudioDevice);  // Corregido: !sdlAudioDevice -> sdlAudioDevice
+    sdlAudioDevice = 0;
+}
+
+// --- Music Functions ---
+
+inline JA_Music_t* JA_LoadMusic(const Uint8* buffer, Uint32 length) {
+    if (!buffer || length == 0) return nullptr;
+
+    // Còpia del OGG comprimit: stb_vorbis llig de forma persistent aquesta
+    // memòria mentre el handle estiga viu, així que hem de posseir-la nosaltres.
+    Uint8* ogg_copy = static_cast<Uint8*>(SDL_malloc(length));
+    if (!ogg_copy) return nullptr;
+    SDL_memcpy(ogg_copy, buffer, length);
+
+    int error = 0;
+    stb_vorbis* vorbis = stb_vorbis_open_memory(ogg_copy, static_cast<int>(length), &error, nullptr);
+    if (!vorbis) {
+        SDL_free(ogg_copy);
+        std::cout << "JA_LoadMusic: stb_vorbis_open_memory failed (error " << error << ")" << '\n';
+        return nullptr;
+    }
+
+    auto* music = new JA_Music_t();
+    music->ogg_data = ogg_copy;
+    music->ogg_length = length;
+    music->vorbis = vorbis;
+
+    const stb_vorbis_info info = stb_vorbis_get_info(vorbis);
+    music->spec.channels = info.channels;
+    music->spec.freq = static_cast<int>(info.sample_rate);
+    music->spec.format = SDL_AUDIO_S16;
+    music->state = JA_MUSIC_STOPPED;
+
+    return music;
+}
+
+inline JA_Music_t* JA_LoadMusic(const char* filename) {
+    // [RZC 28/08/22] Carreguem primer el arxiu en memòria i després el descomprimim. Es algo més rapid.
+    FILE* f = fopen(filename, "rb");
+    if (!f) return NULL;  // Añadida comprobación de apertura
+    fseek(f, 0, SEEK_END);
+    long fsize = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    auto* buffer = static_cast<Uint8*>(malloc(fsize + 1));
+    if (!buffer) {  // Añadida comprobación de malloc
+        fclose(f);
+        return NULL;
+    }
+    if (fread(buffer, fsize, 1, f) != 1) {
+        fclose(f);
+        free(buffer);
+        return NULL;
+    }
+    fclose(f);
+
+    JA_Music_t* music = JA_LoadMusic(buffer, fsize);
+    if (music) {  // Comprobar que JA_LoadMusic tuvo éxito
+        music->filename = static_cast<char*>(malloc(strlen(filename) + 1));
+        if (music->filename) {
+            strcpy(music->filename, filename);
+        }
+    }
+
+    free(buffer);
+
+    return music;
+}
+
+inline void JA_PlayMusic(JA_Music_t* music, const int loop = -1) {
+    if (!JA_musicEnabled || !music || !music->vorbis) return;
+
+    JA_StopMusic();
+
+    current_music = music;
+    current_music->state = JA_MUSIC_PLAYING;
+    current_music->times = loop;
+
+    // Rebobinem l'stream de vorbis al principi. Cobreix tant play-per-primera-
+    // vegada com replays/canvis de track que tornen a la mateixa pista.
+    stb_vorbis_seek_start(current_music->vorbis);
+
+    current_music->stream = SDL_CreateAudioStream(&current_music->spec, &JA_audioSpec);
+    if (!current_music->stream) {
+        std::cout << "Failed to create audio stream!" << '\n';
+        current_music->state = JA_MUSIC_STOPPED;
+        return;
+    }
+    SDL_SetAudioStreamGain(current_music->stream, JA_musicVolume);
+
+    // Pre-cargem el buffer abans de bindejar per evitar un underrun inicial.
+    JA_PumpMusic(current_music);
+
+    if (!SDL_BindAudioStream(sdlAudioDevice, current_music->stream)) printf("[ERROR] SDL_BindAudioStream failed!\n");
+}
+
+inline char* JA_GetMusicFilename(const JA_Music_t* music = nullptr) {
+    if (!music) music = current_music;
+    if (!music) return nullptr;  // Añadida comprobación
+    return music->filename;
+}
+
+inline void JA_PauseMusic() {
+    if (!JA_musicEnabled) return;
+    if (!current_music || current_music->state != JA_MUSIC_PLAYING) return;  // Comprobación mejorada
+
+    current_music->state = JA_MUSIC_PAUSED;
+    SDL_UnbindAudioStream(current_music->stream);
+}
+
+inline void JA_ResumeMusic() {
+    if (!JA_musicEnabled) return;
+    if (!current_music || current_music->state != JA_MUSIC_PAUSED) return;  // Comprobación mejorada
+
+    current_music->state = JA_MUSIC_PLAYING;
+    SDL_BindAudioStream(sdlAudioDevice, current_music->stream);
+}
+
+inline void JA_StopMusic() {
+    if (!current_music || current_music->state == JA_MUSIC_INVALID || current_music->state == JA_MUSIC_STOPPED) return;
+
+    current_music->state = JA_MUSIC_STOPPED;
+    if (current_music->stream) {
+        SDL_DestroyAudioStream(current_music->stream);
+        current_music->stream = nullptr;
+    }
+    // Deixem el handle de vorbis viu — es tanca en JA_DeleteMusic.
+    // Rebobinem perquè un futur JA_PlayMusic comence des del principi.
+    if (current_music->vorbis) {
+        stb_vorbis_seek_start(current_music->vorbis);
+    }
+    // No liberem filename aquí; es fa en JA_DeleteMusic.
+}
+
+inline void JA_FadeOutMusic(const int milliseconds) {
+    if (!JA_musicEnabled) return;
+    if (current_music == NULL || current_music->state == JA_MUSIC_INVALID) return;
+
+    fading = true;
+    fade_start_time = SDL_GetTicks();
+    fade_duration = milliseconds;
+    fade_initial_volume = JA_musicVolume;
+}
+
+inline JA_Music_state JA_GetMusicState() {
+    if (!JA_musicEnabled) return JA_MUSIC_DISABLED;
+    if (!current_music) return JA_MUSIC_INVALID;
+
+    return current_music->state;
+}
+
+inline void JA_DeleteMusic(JA_Music_t* music) {
+    if (!music) return;
+    if (current_music == music) {
+        JA_StopMusic();
+        current_music = nullptr;
+    }
+    if (music->stream) SDL_DestroyAudioStream(music->stream);
+    if (music->vorbis) stb_vorbis_close(music->vorbis);
+    SDL_free(music->ogg_data);
+    free(music->filename);  // filename es libera aquí
+    delete music;
+}
+
+inline float JA_SetMusicVolume(float volume) {
+    JA_musicVolume = SDL_clamp(volume, 0.0f, 1.0f);
+    if (current_music && current_music->stream) {
+        SDL_SetAudioStreamGain(current_music->stream, JA_musicVolume);
+    }
+    return JA_musicVolume;
+}
+
+inline void JA_SetMusicPosition(float /*value*/) {
+    // No implementat amb el backend de streaming. Mai va arribar a usar-se
+    // en el codi existent, així que es manté com a stub.
+}
+
+inline float JA_GetMusicPosition() {
+    // Veure nota a JA_SetMusicPosition.
+    return 0.0f;
+}
+
+inline void JA_EnableMusic(const bool value) {
+    if (!value && current_music && (current_music->state == JA_MUSIC_PLAYING)) JA_StopMusic();
+
+    JA_musicEnabled = value;
+}
+
+// --- Sound Functions ---
+
+inline JA_Sound_t* JA_NewSound(Uint8* buffer, Uint32 length) {
+    JA_Sound_t* sound = new JA_Sound_t();
+    sound->buffer = buffer;
+    sound->length = length;
+    // Nota: spec se queda con los valores por defecto.
+    return sound;
+}
+
+inline JA_Sound_t* JA_LoadSound(uint8_t* buffer, uint32_t size) {
+    JA_Sound_t* sound = new JA_Sound_t();
+    if (!SDL_LoadWAV_IO(SDL_IOFromMem(buffer, size), 1, &sound->spec, &sound->buffer, &sound->length)) {
+        std::cout << "Failed to load WAV from memory: " << SDL_GetError() << '\n';
+        delete sound;
+        return nullptr;
+    }
+    return sound;
+}
+
+inline JA_Sound_t* JA_LoadSound(const char* filename) {
+    JA_Sound_t* sound = new JA_Sound_t();
+    if (!SDL_LoadWAV(filename, &sound->spec, &sound->buffer, &sound->length)) {
+        std::cout << "Failed to load WAV file: " << SDL_GetError() << '\n';
+        delete sound;
+        return nullptr;
+    }
+    return sound;
+}
+
+inline int JA_PlaySound(JA_Sound_t* sound, const int loop = 0, const int group = 0) {
+    if (!JA_soundEnabled || !sound) return -1;
+
+    int channel = 0;
+    while (channel < JA_MAX_SIMULTANEOUS_CHANNELS && channels[channel].state != JA_CHANNEL_FREE) { channel++; }
+    if (channel == JA_MAX_SIMULTANEOUS_CHANNELS) {
+        // No hay canal libre, reemplazamos el primero
+        channel = 0;
+    }
+
+    return JA_PlaySoundOnChannel(sound, channel, loop, group);
+}
+
+inline int JA_PlaySoundOnChannel(JA_Sound_t* sound, const int channel, const int loop, const int group) {
+    if (!JA_soundEnabled || !sound) return -1;
+    if (channel < 0 || channel >= JA_MAX_SIMULTANEOUS_CHANNELS) return -1;
+
+    JA_StopChannel(channel);  // Detiene y limpia el canal si estaba en uso
+
+    channels[channel].sound = sound;
+    channels[channel].times = loop;
+    channels[channel].pos = 0;
+    channels[channel].group = group;  // Asignar grupo
+    channels[channel].state = JA_CHANNEL_PLAYING;
+    channels[channel].stream = SDL_CreateAudioStream(&channels[channel].sound->spec, &JA_audioSpec);
+
+    if (!channels[channel].stream) {
+        std::cout << "Failed to create audio stream for sound!" << '\n';
+        channels[channel].state = JA_CHANNEL_FREE;
+        return -1;
+    }
+
+    SDL_PutAudioStreamData(channels[channel].stream, channels[channel].sound->buffer, channels[channel].sound->length);
+    SDL_SetAudioStreamGain(channels[channel].stream, JA_soundVolume[group]);
+    SDL_BindAudioStream(sdlAudioDevice, channels[channel].stream);
+
+    return channel;
+}
+
+inline void JA_DeleteSound(JA_Sound_t* sound) {
+    if (!sound) return;
+    for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
+        if (channels[i].sound == sound) JA_StopChannel(i);
+    }
+    SDL_free(sound->buffer);
+    delete sound;
+}
+
+inline void JA_PauseChannel(const int channel) {
+    if (!JA_soundEnabled) return;
+
+    if (channel == -1) {
+        for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++)
+            if (channels[i].state == JA_CHANNEL_PLAYING) {
+                channels[i].state = JA_CHANNEL_PAUSED;
+                SDL_UnbindAudioStream(channels[i].stream);
+            }
+    } else if (channel >= 0 && channel < JA_MAX_SIMULTANEOUS_CHANNELS) {
+        if (channels[channel].state == JA_CHANNEL_PLAYING) {
+            channels[channel].state = JA_CHANNEL_PAUSED;
+            SDL_UnbindAudioStream(channels[channel].stream);
+        }
+    }
+}
+
+inline void JA_ResumeChannel(const int channel) {
+    if (!JA_soundEnabled) return;
+
+    if (channel == -1) {
+        for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++)
+            if (channels[i].state == JA_CHANNEL_PAUSED) {
+                channels[i].state = JA_CHANNEL_PLAYING;
+                SDL_BindAudioStream(sdlAudioDevice, channels[i].stream);
+            }
+    } else if (channel >= 0 && channel < JA_MAX_SIMULTANEOUS_CHANNELS) {
+        if (channels[channel].state == JA_CHANNEL_PAUSED) {
+            channels[channel].state = JA_CHANNEL_PLAYING;
+            SDL_BindAudioStream(sdlAudioDevice, channels[channel].stream);
+        }
+    }
+}
+
+inline void JA_StopChannel(const int channel) {
+    if (channel == -1) {
+        for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
+            if (channels[i].state != JA_CHANNEL_FREE) {
+                if (channels[i].stream) SDL_DestroyAudioStream(channels[i].stream);
+                channels[i].stream = nullptr;
+                channels[i].state = JA_CHANNEL_FREE;
+                channels[i].pos = 0;
+                channels[i].sound = NULL;
+            }
+        }
+    } else if (channel >= 0 && channel < JA_MAX_SIMULTANEOUS_CHANNELS) {
+        if (channels[channel].state != JA_CHANNEL_FREE) {
+            if (channels[channel].stream) SDL_DestroyAudioStream(channels[channel].stream);
+            channels[channel].stream = nullptr;
+            channels[channel].state = JA_CHANNEL_FREE;
+            channels[channel].pos = 0;
+            channels[channel].sound = NULL;
+        }
+    }
+}
+
+inline JA_Channel_state JA_GetChannelState(const int channel) {
+    if (!JA_soundEnabled) return JA_SOUND_DISABLED;
+    if (channel < 0 || channel >= JA_MAX_SIMULTANEOUS_CHANNELS) return JA_CHANNEL_INVALID;
+
+    return channels[channel].state;
+}
+
+inline float JA_SetSoundVolume(float volume, const int group = -1)  // -1 para todos los grupos
+{
+    const float v = SDL_clamp(volume, 0.0f, 1.0f);
+
+    if (group == -1) {
+        for (int i = 0; i < JA_MAX_GROUPS; ++i) {
+            JA_soundVolume[i] = v;
+        }
+    } else if (group >= 0 && group < JA_MAX_GROUPS) {
+        JA_soundVolume[group] = v;
+    } else {
+        return v;  // Grupo inválido
+    }
+
+    // Aplicar volumen a canales activos
+    for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
+        if ((channels[i].state == JA_CHANNEL_PLAYING) || (channels[i].state == JA_CHANNEL_PAUSED)) {
+            if (group == -1 || channels[i].group == group) {
+                if (channels[i].stream) {
+                    SDL_SetAudioStreamGain(channels[i].stream, JA_soundVolume[channels[i].group]);
+                }
+            }
+        }
+    }
+    return v;
+}
+
+inline void JA_EnableSound(const bool value) {
+    if (!value) {
+        JA_StopChannel(-1);  // Detener todos los canales
+    }
+    JA_soundEnabled = value;
+}
+
+inline float JA_SetVolume(float volume) {
+    float v = JA_SetMusicVolume(volume);
+    JA_SetSoundVolume(v, -1);  // Aplicar a todos los grupos de sonido
+    return v;
+}