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reestructuració

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Sergio
2026-04-14 13:26:22 +02:00
parent 4ac34b8583
commit 4429cd92c1
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252
source/external/gif.cpp vendored
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#include "gif.hpp"
#include <SDL3/SDL.h> // Para SDL_LogError, SDL_LogCategory, SDL_LogInfo
#include <cstring> // Para memcpy, size_t
#include <iostream> // Para std::cout
#include <stdexcept> // Para runtime_error
#include <string> // Para char_traits, operator==, basic_string, string
namespace GIF {
inline void readBytes(const uint8_t *&buffer, void *dst, size_t size) {
std::memcpy(dst, buffer, size);
buffer += size;
}
void Gif::decompress(int code_length, const uint8_t *input, int input_length, uint8_t *out) {
if (code_length < 2 || code_length > 12) {
std::cout << "Invalid LZW code length: " << code_length << '\n';
throw std::runtime_error("Invalid LZW code length");
}
int i, bit;
int prev = -1;
std::vector<DictionaryEntry> dictionary;
int dictionary_ind;
unsigned int mask = 0x01;
int reset_code_length = code_length;
int clear_code = 1 << code_length;
int stop_code = clear_code + 1;
int match_len = 0;
dictionary.resize(1 << (code_length + 1));
for (dictionary_ind = 0; dictionary_ind < (1 << code_length); dictionary_ind++) {
dictionary[dictionary_ind].byte = static_cast<uint8_t>(dictionary_ind);
dictionary[dictionary_ind].prev = -1;
dictionary[dictionary_ind].len = 1;
}
dictionary_ind += 2;
while (input_length > 0) {
int code = 0;
for (i = 0; i < (code_length + 1); i++) {
if (input_length <= 0) {
std::cout << "Unexpected end of input in decompress" << '\n';
throw std::runtime_error("Unexpected end of input in decompress");
}
bit = ((*input & mask) != 0) ? 1 : 0;
mask <<= 1;
if (mask == 0x100) {
mask = 0x01;
input++;
input_length--;
}
code |= (bit << i);
}
if (code == clear_code) {
code_length = reset_code_length;
dictionary.resize(1 << (code_length + 1));
for (dictionary_ind = 0; dictionary_ind < (1 << code_length); dictionary_ind++) {
dictionary[dictionary_ind].byte = static_cast<uint8_t>(dictionary_ind);
dictionary[dictionary_ind].prev = -1;
dictionary[dictionary_ind].len = 1;
}
dictionary_ind += 2;
prev = -1;
continue;
} else if (code == stop_code) {
break;
}
if (prev > -1 && code_length < 12) {
if (code > dictionary_ind) {
std::cout << "LZW error: code (" << code << ") exceeds dictionary_ind (" << dictionary_ind << ")" << '\n';
throw std::runtime_error("LZW error: code exceeds dictionary_ind.");
}
int ptr;
if (code == dictionary_ind) {
ptr = prev;
while (dictionary[ptr].prev != -1)
ptr = dictionary[ptr].prev;
dictionary[dictionary_ind].byte = dictionary[ptr].byte;
} else {
ptr = code;
while (dictionary[ptr].prev != -1)
ptr = dictionary[ptr].prev;
dictionary[dictionary_ind].byte = dictionary[ptr].byte;
}
dictionary[dictionary_ind].prev = prev;
dictionary[dictionary_ind].len = dictionary[prev].len + 1;
dictionary_ind++;
if ((dictionary_ind == (1 << (code_length + 1))) && (code_length < 11)) {
code_length++;
dictionary.resize(1 << (code_length + 1));
}
}
prev = code;
if (code < 0 || static_cast<size_t>(code) >= dictionary.size()) {
std::cout << "Invalid LZW code " << code << ", dictionary size " << static_cast<unsigned long>(dictionary.size()) << '\n';
throw std::runtime_error("LZW error: invalid code encountered");
}
int curCode = code;
match_len = dictionary[curCode].len;
while (curCode != -1) {
out[dictionary[curCode].len - 1] = dictionary[curCode].byte;
if (dictionary[curCode].prev == curCode) {
std::cout << "Internal error; self-reference detected." << '\n';
throw std::runtime_error("Internal error in decompress: self-reference");
}
curCode = dictionary[curCode].prev;
}
out += match_len;
}
}
std::vector<uint8_t> Gif::readSubBlocks(const uint8_t *&buffer) {
std::vector<uint8_t> data;
uint8_t block_size = *buffer;
buffer++;
while (block_size != 0) {
data.insert(data.end(), buffer, buffer + block_size);
buffer += block_size;
block_size = *buffer;
buffer++;
}
return data;
}
std::vector<uint8_t> Gif::processImageDescriptor(const uint8_t *&buffer, const std::vector<RGB> &gct, int resolution_bits) {
ImageDescriptor image_descriptor;
readBytes(buffer, &image_descriptor, sizeof(ImageDescriptor));
uint8_t lzw_code_size;
readBytes(buffer, &lzw_code_size, sizeof(uint8_t));
std::vector<uint8_t> compressed_data = readSubBlocks(buffer);
int uncompressed_data_length = image_descriptor.image_width * image_descriptor.image_height;
std::vector<uint8_t> uncompressed_data(uncompressed_data_length);
decompress(lzw_code_size, compressed_data.data(), static_cast<int>(compressed_data.size()), uncompressed_data.data());
return uncompressed_data;
}
std::vector<uint32_t> Gif::loadPalette(const uint8_t *buffer) {
uint8_t header[6];
std::memcpy(header, buffer, 6);
buffer += 6;
ScreenDescriptor screen_descriptor;
std::memcpy(&screen_descriptor, buffer, sizeof(ScreenDescriptor));
buffer += sizeof(ScreenDescriptor);
std::vector<uint32_t> global_color_table;
if (screen_descriptor.fields & 0x80) {
int global_color_table_size = 1 << (((screen_descriptor.fields & 0x07) + 1));
global_color_table.resize(global_color_table_size);
for (int i = 0; i < global_color_table_size; ++i) {
uint8_t r = buffer[0];
uint8_t g = buffer[1];
uint8_t b = buffer[2];
global_color_table[i] = (r << 16) | (g << 8) | b;
buffer += 3;
}
}
return global_color_table;
}
std::vector<uint8_t> Gif::processGifStream(const uint8_t *buffer, uint16_t &w, uint16_t &h) {
uint8_t header[6];
std::memcpy(header, buffer, 6);
buffer += 6;
std::string headerStr(reinterpret_cast<char *>(header), 6);
if (headerStr != "GIF87a" && headerStr != "GIF89a") {
std::cout << "Formato de archivo GIF inválido: " << headerStr << '\n';
throw std::runtime_error("Formato de archivo GIF inválido.");
}
ScreenDescriptor screen_descriptor;
readBytes(buffer, &screen_descriptor, sizeof(ScreenDescriptor));
w = screen_descriptor.width;
h = screen_descriptor.height;
int color_resolution_bits = ((screen_descriptor.fields & 0x70) >> 4) + 1;
std::vector<RGB> global_color_table;
if (screen_descriptor.fields & 0x80) {
int global_color_table_size = 1 << (((screen_descriptor.fields & 0x07) + 1));
global_color_table.resize(global_color_table_size);
std::memcpy(global_color_table.data(), buffer, 3 * global_color_table_size);
buffer += 3 * global_color_table_size;
}
uint8_t block_type = *buffer++;
while (block_type != TRAILER) {
if (block_type == EXTENSION_INTRODUCER) {
uint8_t extension_label = *buffer++;
switch (extension_label) {
case GRAPHIC_CONTROL: {
uint8_t blockSize = *buffer++;
buffer += blockSize;
uint8_t subBlockSize = *buffer++;
while (subBlockSize != 0) {
buffer += subBlockSize;
subBlockSize = *buffer++;
}
break;
}
case APPLICATION_EXTENSION:
case COMMENT_EXTENSION:
case PLAINTEXT_EXTENSION: {
uint8_t blockSize = *buffer++;
buffer += blockSize;
uint8_t subBlockSize = *buffer++;
while (subBlockSize != 0) {
buffer += subBlockSize;
subBlockSize = *buffer++;
}
break;
}
default: {
uint8_t blockSize = *buffer++;
buffer += blockSize;
uint8_t subBlockSize = *buffer++;
while (subBlockSize != 0) {
buffer += subBlockSize;
subBlockSize = *buffer++;
}
break;
}
}
} else if (block_type == IMAGE_DESCRIPTOR) {
return processImageDescriptor(buffer, global_color_table, color_resolution_bits);
} else {
std::cout << "Unrecognized block type: 0x" << std::hex << static_cast<int>(block_type) << std::dec << '\n';
return std::vector<uint8_t>{};
}
block_type = *buffer++;
}
return std::vector<uint8_t>{};
}
std::vector<uint8_t> Gif::loadGif(const uint8_t *buffer, uint16_t &w, uint16_t &h) {
return processGifStream(buffer, w, h);
}
} // namespace GIF

92
source/external/gif.hpp vendored
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#pragma once
#include <cstdint> // Para uint8_t, uint16_t, uint32_t
#include <vector> // Para vector
namespace GIF {
// Constantes definidas con constexpr, en lugar de macros
constexpr uint8_t EXTENSION_INTRODUCER = 0x21;
constexpr uint8_t IMAGE_DESCRIPTOR = 0x2C;
constexpr uint8_t TRAILER = 0x3B;
constexpr uint8_t GRAPHIC_CONTROL = 0xF9;
constexpr uint8_t APPLICATION_EXTENSION = 0xFF;
constexpr uint8_t COMMENT_EXTENSION = 0xFE;
constexpr uint8_t PLAINTEXT_EXTENSION = 0x01;
#pragma pack(push, 1)
struct ScreenDescriptor {
uint16_t width;
uint16_t height;
uint8_t fields;
uint8_t background_color_index;
uint8_t pixel_aspect_ratio;
};
struct RGB {
uint8_t r, g, b;
};
struct ImageDescriptor {
uint16_t image_left_position;
uint16_t image_top_position;
uint16_t image_width;
uint16_t image_height;
uint8_t fields;
};
#pragma pack(pop)
struct DictionaryEntry {
uint8_t byte;
int prev;
int len;
};
struct Extension {
uint8_t extension_code;
uint8_t block_size;
};
struct GraphicControlExtension {
uint8_t fields;
uint16_t delay_time;
uint8_t transparent_color_index;
};
struct ApplicationExtension {
uint8_t application_id[8];
uint8_t version[3];
};
struct PlaintextExtension {
uint16_t left, top, width, height;
uint8_t cell_width, cell_height;
uint8_t foreground_color, background_color;
};
class Gif {
public:
// Descompone (uncompress) el bloque comprimido usando LZW.
// Este método puede lanzar std::runtime_error en caso de error.
void decompress(int code_length, const uint8_t *input, int input_length, uint8_t *out);
// Carga la paleta (global color table) a partir de un buffer,
// retornándola en un vector de uint32_t (cada color se compone de R, G, B).
std::vector<uint32_t> loadPalette(const uint8_t *buffer);
// Carga el stream GIF; devuelve un vector con los datos de imagen sin comprimir y
// asigna el ancho y alto mediante referencias.
std::vector<uint8_t> loadGif(const uint8_t *buffer, uint16_t &w, uint16_t &h);
private:
// Lee los sub-bloques de datos y los acumula en un std::vector<uint8_t>.
std::vector<uint8_t> readSubBlocks(const uint8_t *&buffer);
// Procesa el Image Descriptor y retorna el vector de datos sin comprimir.
std::vector<uint8_t> processImageDescriptor(const uint8_t *&buffer, const std::vector<RGB> &gct, int resolution_bits);
// Procesa el stream completo del GIF y devuelve los datos sin comprimir.
std::vector<uint8_t> processGifStream(const uint8_t *buffer, uint16_t &w, uint16_t &h);
};
} // namespace GIF

557
source/external/jail_audio.hpp vendored
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#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;
}