700 lines
27 KiB
C++
700 lines
27 KiB
C++
#pragma once
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// --- Includes ---
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#include <SDL3/SDL.h>
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#include <algorithm>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <iostream>
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#include <memory>
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#include <string>
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#include <vector>
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#define STB_VORBIS_HEADER_ONLY
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// NOLINTNEXTLINE(bugprone-suspicious-include) — stb_vorbis és single-file: la macro de dalt limita a només-declaracions.
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#include "external/stb_vorbis.c" // Para stb_vorbis_open_memory i streaming
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// Deleter stateless per a buffers reservats amb `SDL_malloc` / `SDL_LoadWAV*`.
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// Compatible amb `std::unique_ptr<Uint8[], SdlFreeDeleter>` — zero size
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// overhead gràcies a EBO, igual que un unique_ptr amb default_delete.
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struct SdlFreeDeleter {
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void operator()(Uint8* p) const noexcept {
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if (p != nullptr) { SDL_free(p); }
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}
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};
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namespace Ja {
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// --- Public Enums ---
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enum class ChannelState : std::uint8_t {
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INVALID,
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FREE,
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PLAYING,
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PAUSED,
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DISABLED,
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};
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enum class MusicState : std::uint8_t {
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INVALID,
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PLAYING,
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PAUSED,
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STOPPED,
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DISABLED,
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};
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// --- Constants ---
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inline constexpr int MAX_SIMULTANEOUS_CHANNELS = 20;
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inline constexpr int MAX_GROUPS = 2;
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inline constexpr SDL_AudioSpec DEFAULT_SPEC{.format = SDL_AUDIO_S16, .channels = 2, .freq = 48000};
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// --- Struct Definitions ---
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struct Sound {
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SDL_AudioSpec spec{DEFAULT_SPEC};
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Uint32 length{0};
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// Buffer descomprimit (PCM) propietat del sound. Reservat per SDL_LoadWAV
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// via SDL_malloc; el deleter `SdlFreeDeleter` allibera amb SDL_free.
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std::unique_ptr<Uint8[], SdlFreeDeleter> buffer;
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};
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// L'ordre (punters primer, ints després, enum de 8 bits al final) minimitza
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// el padding a 64-bit (evita avisos de clang-analyzer-optin.performance.Padding).
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struct Channel {
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Sound* sound{nullptr};
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SDL_AudioStream* stream{nullptr};
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int pos{0};
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int times{0};
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int group{0};
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ChannelState state{ChannelState::FREE};
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};
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struct Music {
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SDL_AudioSpec spec{DEFAULT_SPEC};
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// OGG comprimit en memòria. Propietat nostra; es copia des del buffer
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// d'entrada una sola vegada en loadMusic i es descomprimix en chunks
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// per streaming. Com que stb_vorbis guarda un punter persistent al
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// `.data()` d'aquest vector, no el podem resize'jar un cop establert
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// (una reallocation invalidaria el punter que el decoder conserva).
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std::vector<Uint8> ogg_data;
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stb_vorbis* vorbis{nullptr}; // handle del decoder, viu tot el cicle del Music
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std::string filename;
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int times{0}; // loops restants (-1 = infinit, 0 = un sol play)
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SDL_AudioStream* stream{nullptr};
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MusicState state{MusicState::INVALID};
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};
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struct FadeState {
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bool active{false};
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Uint64 start_time{0};
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int duration_ms{0};
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float initial_volume{0.0F};
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};
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struct OutgoingMusic {
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SDL_AudioStream* stream{nullptr};
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FadeState fade;
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};
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// --- Internal Global State (inline, C++17) ---
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inline Music* current_music{nullptr};
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inline Channel channels[MAX_SIMULTANEOUS_CHANNELS];
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inline SDL_AudioSpec audio_spec{DEFAULT_SPEC};
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inline float music_volume{1.0F};
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inline float sound_volume[MAX_GROUPS];
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inline bool music_enabled{true};
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inline bool sound_enabled{true};
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inline SDL_AudioDeviceID sdl_audio_device{0};
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inline OutgoingMusic outgoing_music;
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inline FadeState incoming_fade;
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// --- Forward Declarations ---
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inline void stopMusic();
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inline void stopChannel(int channel);
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inline auto playSoundOnChannel(Sound* sound, int channel, int loop = 0, int group = 0) -> int;
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inline void crossfadeMusic(Music* music, int crossfade_ms, int loop = -1);
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// --- Music streaming internals ---
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// Bytes-per-sample per canal (sempre s16)
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inline constexpr int MUSIC_BYTES_PER_SAMPLE = 2;
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// Quants shorts decodifiquem per crida a get_samples_short_interleaved.
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// 8192 shorts = 4096 samples/channel en estèreo ≈ 85ms de so a 48kHz.
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inline constexpr int MUSIC_CHUNK_SHORTS = 8192;
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// Umbral d'audio per davant del cursor de reproducció. Mantenim ≥ 0.5 s a
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// l'SDL_AudioStream per absorbir jitter de frame i evitar underruns.
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inline constexpr float MUSIC_LOW_WATER_SECONDS = 0.5F;
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// Decodifica un chunk del vorbis i el volca a l'stream. Retorna samples
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// decodificats per canal (0 = EOF de l'stream vorbis).
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inline auto feedMusicChunk(Music* music) -> int {
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if ((music == nullptr) || (music->vorbis == nullptr) || (music->stream == nullptr)) { return 0; }
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short chunk[MUSIC_CHUNK_SHORTS];
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const int NUM_CHANNELS = music->spec.channels;
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const int SAMPLES_PER_CHANNEL = stb_vorbis_get_samples_short_interleaved(
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music->vorbis,
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NUM_CHANNELS,
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chunk,
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MUSIC_CHUNK_SHORTS);
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if (SAMPLES_PER_CHANNEL <= 0) { return 0; }
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const int BYTES = SAMPLES_PER_CHANNEL * NUM_CHANNELS * MUSIC_BYTES_PER_SAMPLE;
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SDL_PutAudioStreamData(music->stream, chunk, BYTES);
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return SAMPLES_PER_CHANNEL;
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}
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// Reompli l'stream fins que tinga ≥ MUSIC_LOW_WATER_SECONDS bufferats.
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// En arribar a EOF del vorbis, aplica el loop (times) o deixa drenar.
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inline void pumpMusic(Music* music) {
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if ((music == nullptr) || (music->vorbis == nullptr) || (music->stream == nullptr)) { return; }
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const int BYTES_PER_SECOND = music->spec.freq * music->spec.channels * MUSIC_BYTES_PER_SAMPLE;
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const int LOW_WATER_BYTES = static_cast<int>(MUSIC_LOW_WATER_SECONDS * static_cast<float>(BYTES_PER_SECOND));
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while (SDL_GetAudioStreamAvailable(music->stream) < LOW_WATER_BYTES) {
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const int DECODED = feedMusicChunk(music);
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if (DECODED > 0) { continue; }
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// EOF: si queden loops, rebobinar; si no, tallar i deixar drenar.
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if (music->times != 0) {
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stb_vorbis_seek_start(music->vorbis);
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if (music->times > 0) { music->times--; }
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} else {
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break;
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}
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}
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}
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// Pre-carrega `duration_ms` de so dins l'stream actual abans que l'stream
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// siga robat per outgoing_music (crossfade o fade-out). Imprescindible amb
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// streaming: l'stream robat no es pot re-alimentar perquè perd la referència
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// al seu vorbis decoder. No aplica loop — si el vorbis s'esgota abans, parem.
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inline void preFillOutgoing(Music* music, int duration_ms) {
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if ((music == nullptr) || (music->vorbis == nullptr) || (music->stream == nullptr)) { return; }
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const int BYTES_PER_SECOND = music->spec.freq * music->spec.channels * MUSIC_BYTES_PER_SAMPLE;
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const int NEEDED_BYTES = static_cast<int>((static_cast<std::int64_t>(duration_ms) * BYTES_PER_SECOND) / 1000);
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while (SDL_GetAudioStreamAvailable(music->stream) < NEEDED_BYTES) {
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const int DECODED = feedMusicChunk(music);
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if (DECODED <= 0) { break; } // EOF: deixem drenar el que hi haja
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}
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}
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// --- update() helpers ---
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inline void updateOutgoingFade() {
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if ((outgoing_music.stream == nullptr) || !outgoing_music.fade.active) { return; }
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const Uint64 NOW = SDL_GetTicks();
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const Uint64 ELAPSED = NOW - outgoing_music.fade.start_time;
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if (ELAPSED >= static_cast<Uint64>(outgoing_music.fade.duration_ms)) {
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SDL_DestroyAudioStream(outgoing_music.stream);
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outgoing_music.stream = nullptr;
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outgoing_music.fade.active = false;
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} else {
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const float PERCENT = static_cast<float>(ELAPSED) / static_cast<float>(outgoing_music.fade.duration_ms);
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SDL_SetAudioStreamGain(outgoing_music.stream, outgoing_music.fade.initial_volume * (1.0F - PERCENT));
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}
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}
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inline void updateIncomingFade() {
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if (!incoming_fade.active) { return; }
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const Uint64 NOW = SDL_GetTicks();
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const Uint64 ELAPSED = NOW - incoming_fade.start_time;
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if (ELAPSED >= static_cast<Uint64>(incoming_fade.duration_ms)) {
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incoming_fade.active = false;
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SDL_SetAudioStreamGain(current_music->stream, music_volume);
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} else {
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const float PERCENT = static_cast<float>(ELAPSED) / static_cast<float>(incoming_fade.duration_ms);
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SDL_SetAudioStreamGain(current_music->stream, music_volume * PERCENT);
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}
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}
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inline void updateCurrentMusic() {
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if (!music_enabled || (current_music == nullptr) || current_music->state != MusicState::PLAYING) { return; }
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updateIncomingFade();
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// Streaming: rellenem l'stream fins al low-water-mark i parem si el
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// vorbis s'ha esgotat i no queden loops.
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pumpMusic(current_music);
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if (current_music->times == 0 && SDL_GetAudioStreamAvailable(current_music->stream) == 0) {
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stopMusic();
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}
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}
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inline void updateSoundChannels() {
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if (!sound_enabled) { return; }
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for (int i = 0; i < MAX_SIMULTANEOUS_CHANNELS; ++i) {
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auto& ch = channels[i];
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if (ch.state != ChannelState::PLAYING) { continue; }
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if (ch.times != 0) {
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if (static_cast<Uint32>(SDL_GetAudioStreamAvailable(ch.stream)) < (ch.sound->length / 2)) {
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SDL_PutAudioStreamData(ch.stream, ch.sound->buffer.get(), ch.sound->length);
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if (ch.times > 0) { ch.times--; }
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}
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} else {
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if (SDL_GetAudioStreamAvailable(ch.stream) == 0) { stopChannel(i); }
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}
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}
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}
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inline void update() {
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updateOutgoingFade();
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updateCurrentMusic();
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updateSoundChannels();
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}
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inline void init(int freq, SDL_AudioFormat format, int num_channels) {
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audio_spec = {.format = format, .channels = num_channels, .freq = freq};
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if (sdl_audio_device != 0) { SDL_CloseAudioDevice(sdl_audio_device); }
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sdl_audio_device = SDL_OpenAudioDevice(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &audio_spec);
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if (sdl_audio_device == 0) { std::cout << "Failed to initialize SDL audio!" << '\n'; }
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for (auto& ch : channels) { ch.state = ChannelState::FREE; }
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std::ranges::fill(sound_volume, 0.5F);
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}
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inline void quit() {
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if (outgoing_music.stream != nullptr) {
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SDL_DestroyAudioStream(outgoing_music.stream);
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outgoing_music.stream = nullptr;
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}
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if (sdl_audio_device != 0) { SDL_CloseAudioDevice(sdl_audio_device); }
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sdl_audio_device = 0;
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}
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// --- Music Functions ---
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inline auto loadMusic(const Uint8* buffer, Uint32 length) -> Music* {
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if ((buffer == nullptr) || length == 0) { return nullptr; }
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// Allocem el Music primer per aprofitar el seu `std::vector<Uint8>`
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// com a propietari del OGG comprimit. stb_vorbis guarda un punter
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// persistent al buffer; com que ací no el resize'jem, el .data() és
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// estable durant tot el cicle de vida del music.
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auto* music = new Music();
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music->ogg_data.assign(buffer, buffer + length);
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int vorbis_error = 0;
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music->vorbis = stb_vorbis_open_memory(music->ogg_data.data(),
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static_cast<int>(length),
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&vorbis_error,
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nullptr);
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if (music->vorbis == nullptr) {
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std::cout << "loadMusic: stb_vorbis_open_memory failed (error " << vorbis_error << ")" << '\n';
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delete music;
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return nullptr;
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}
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const stb_vorbis_info INFO = stb_vorbis_get_info(music->vorbis);
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music->spec.channels = INFO.channels;
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music->spec.freq = static_cast<int>(INFO.sample_rate);
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music->spec.format = SDL_AUDIO_S16;
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music->state = MusicState::STOPPED;
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return music;
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}
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// Overload amb filename — els callers l'usen per poder comparar la música
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// en curs amb getMusicFilename() i no rearrancar-la si ja és la mateixa.
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inline auto loadMusic(Uint8* buffer, Uint32 length, const char* filename) -> Music* {
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Music* music = loadMusic(static_cast<const Uint8*>(buffer), length);
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if ((music != nullptr) && (filename != nullptr)) { music->filename = filename; }
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return music;
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}
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inline auto loadMusic(const char* filename) -> Music* {
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// Carreguem primer el arxiu en memòria i després el descomprimim.
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FILE* f = std::fopen(filename, "rb");
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if (f == nullptr) { return nullptr; }
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std::fseek(f, 0, SEEK_END);
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const long FSIZE = std::ftell(f);
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std::fseek(f, 0, SEEK_SET);
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if (FSIZE <= 0) {
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std::fclose(f);
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return nullptr;
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}
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auto* buffer = static_cast<Uint8*>(std::malloc(static_cast<size_t>(FSIZE) + 1));
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if (buffer == nullptr) {
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std::fclose(f);
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return nullptr;
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}
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if (std::fread(buffer, FSIZE, 1, f) != 1) {
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std::fclose(f);
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std::free(buffer);
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return nullptr;
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}
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std::fclose(f);
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Music* music = loadMusic(static_cast<const Uint8*>(buffer), static_cast<Uint32>(FSIZE));
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if (music != nullptr) { music->filename = filename; }
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std::free(buffer);
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return music;
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}
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inline void playMusic(Music* music, int loop = -1) {
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if (!music_enabled || (music == nullptr) || (music->vorbis == nullptr)) { return; }
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stopMusic();
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current_music = music;
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current_music->state = MusicState::PLAYING;
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current_music->times = loop;
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// Rebobinem l'stream de vorbis al principi. Cobreix tant play-per-primera-
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// vegada com replays/canvis de track que tornen a la mateixa pista.
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stb_vorbis_seek_start(current_music->vorbis);
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current_music->stream = SDL_CreateAudioStream(¤t_music->spec, &audio_spec);
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if (current_music->stream == nullptr) {
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std::cout << "Failed to create audio stream!" << '\n';
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current_music->state = MusicState::STOPPED;
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return;
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}
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SDL_SetAudioStreamGain(current_music->stream, music_volume);
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// Pre-cargem el buffer abans de bindejar per evitar un underrun inicial.
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pumpMusic(current_music);
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if (!SDL_BindAudioStream(sdl_audio_device, current_music->stream)) {
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std::cout << "[ERROR] SDL_BindAudioStream failed!" << '\n';
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}
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}
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inline auto getMusicFilename(const Music* music = nullptr) -> const char* {
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if (music == nullptr) { music = current_music; }
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if ((music == nullptr) || music->filename.empty()) { return nullptr; }
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return music->filename.c_str();
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}
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inline void pauseMusic() {
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if (!music_enabled) { return; }
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if ((current_music == nullptr) || current_music->state != MusicState::PLAYING) { return; }
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current_music->state = MusicState::PAUSED;
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SDL_UnbindAudioStream(current_music->stream);
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}
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inline void resumeMusic() {
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if (!music_enabled) { return; }
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if ((current_music == nullptr) || current_music->state != MusicState::PAUSED) { return; }
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current_music->state = MusicState::PLAYING;
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SDL_BindAudioStream(sdl_audio_device, current_music->stream);
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}
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inline void stopMusic() {
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// Limpiar outgoing crossfade si existe
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if (outgoing_music.stream != nullptr) {
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SDL_DestroyAudioStream(outgoing_music.stream);
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outgoing_music.stream = nullptr;
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outgoing_music.fade.active = false;
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}
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incoming_fade.active = false;
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if ((current_music == nullptr) || current_music->state == MusicState::INVALID || current_music->state == MusicState::STOPPED) { return; }
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current_music->state = MusicState::STOPPED;
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if (current_music->stream != nullptr) {
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SDL_DestroyAudioStream(current_music->stream);
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current_music->stream = nullptr;
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}
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// Deixem el handle de vorbis viu — es tanca en deleteMusic.
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// Rebobinem perquè un futur playMusic comence des del principi.
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if (current_music->vorbis != nullptr) {
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stb_vorbis_seek_start(current_music->vorbis);
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}
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}
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inline void fadeOutMusic(int milliseconds) {
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if (!music_enabled) { return; }
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if ((current_music == nullptr) || current_music->state != MusicState::PLAYING) { return; }
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// Destruir outgoing anterior si existe
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if (outgoing_music.stream != nullptr) {
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SDL_DestroyAudioStream(outgoing_music.stream);
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outgoing_music.stream = nullptr;
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}
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// Pre-omplim l'stream amb `milliseconds` de so: un cop robat, ja no
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// tindrà accés al vorbis decoder i només podrà drenar el que tinga.
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preFillOutgoing(current_music, milliseconds);
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// Robar el stream del current_music al outgoing
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outgoing_music.stream = current_music->stream;
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outgoing_music.fade = {.active = true, .start_time = SDL_GetTicks(), .duration_ms = milliseconds, .initial_volume = music_volume};
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// Dejar current_music sin stream (ya lo tiene outgoing)
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current_music->stream = nullptr;
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current_music->state = MusicState::STOPPED;
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if (current_music->vorbis != nullptr) { stb_vorbis_seek_start(current_music->vorbis); }
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incoming_fade.active = false;
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}
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inline void crossfadeMusic(Music* music, int crossfade_ms, int loop) {
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if (!music_enabled || (music == nullptr) || (music->vorbis == nullptr)) { return; }
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// Destruir outgoing anterior si existe (crossfade durante crossfade)
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if (outgoing_music.stream != nullptr) {
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SDL_DestroyAudioStream(outgoing_music.stream);
|
|
outgoing_music.stream = nullptr;
|
|
outgoing_music.fade.active = false;
|
|
}
|
|
|
|
// Robar el stream de la musica actual al outgoing para el fade-out.
|
|
// Pre-omplim amb `crossfade_ms` de so perquè no es quede en silenci
|
|
// abans d'acabar el fade (l'stream robat ja no pot alimentar-se).
|
|
if ((current_music != nullptr) && current_music->state == MusicState::PLAYING && (current_music->stream != nullptr)) {
|
|
preFillOutgoing(current_music, crossfade_ms);
|
|
outgoing_music.stream = current_music->stream;
|
|
outgoing_music.fade = {.active = true, .start_time = SDL_GetTicks(), .duration_ms = crossfade_ms, .initial_volume = music_volume};
|
|
current_music->stream = nullptr;
|
|
current_music->state = MusicState::STOPPED;
|
|
if (current_music->vorbis != nullptr) { stb_vorbis_seek_start(current_music->vorbis); }
|
|
}
|
|
|
|
// Iniciar la nueva pista con gain=0 (el fade-in la sube gradualmente)
|
|
current_music = music;
|
|
current_music->state = MusicState::PLAYING;
|
|
current_music->times = loop;
|
|
|
|
stb_vorbis_seek_start(current_music->vorbis);
|
|
current_music->stream = SDL_CreateAudioStream(¤t_music->spec, &audio_spec);
|
|
if (current_music->stream == nullptr) {
|
|
std::cout << "Failed to create audio stream for crossfade!" << '\n';
|
|
current_music->state = MusicState::STOPPED;
|
|
return;
|
|
}
|
|
SDL_SetAudioStreamGain(current_music->stream, 0.0F);
|
|
pumpMusic(current_music); // pre-carrega abans de bindejar
|
|
SDL_BindAudioStream(sdl_audio_device, current_music->stream);
|
|
|
|
// Configurar fade-in
|
|
incoming_fade = {.active = true, .start_time = SDL_GetTicks(), .duration_ms = crossfade_ms, .initial_volume = 0.0F};
|
|
}
|
|
|
|
inline auto getMusicState() -> MusicState {
|
|
if (!music_enabled) { return MusicState::DISABLED; }
|
|
if (current_music == nullptr) { return MusicState::INVALID; }
|
|
|
|
return current_music->state;
|
|
}
|
|
|
|
inline void deleteMusic(Music* music) {
|
|
if (music == nullptr) { return; }
|
|
if (current_music == music) {
|
|
stopMusic();
|
|
current_music = nullptr;
|
|
}
|
|
if (music->stream != nullptr) { SDL_DestroyAudioStream(music->stream); }
|
|
if (music->vorbis != nullptr) { stb_vorbis_close(music->vorbis); }
|
|
// ogg_data (std::vector) i filename (std::string) s'alliberen sols
|
|
// al destructor de Music.
|
|
delete music;
|
|
}
|
|
|
|
inline auto setMusicVolume(float volume) -> float {
|
|
music_volume = SDL_clamp(volume, 0.0F, 1.0F);
|
|
if ((current_music != nullptr) && (current_music->stream != nullptr)) {
|
|
SDL_SetAudioStreamGain(current_music->stream, music_volume);
|
|
}
|
|
return music_volume;
|
|
}
|
|
|
|
inline void setMusicPosition(float /*value*/) {
|
|
// No implementat amb el backend de streaming.
|
|
}
|
|
|
|
inline auto getMusicPosition() -> float {
|
|
return 0.0F;
|
|
}
|
|
|
|
inline void enableMusic(bool value) {
|
|
if (!value && (current_music != nullptr) && (current_music->state == MusicState::PLAYING)) { stopMusic(); }
|
|
music_enabled = value;
|
|
}
|
|
|
|
// --- Sound Functions ---
|
|
inline auto loadSound(std::uint8_t* buffer, std::uint32_t size) -> Sound* {
|
|
auto sound = std::make_unique<Sound>();
|
|
Uint8* raw = nullptr;
|
|
if (!SDL_LoadWAV_IO(SDL_IOFromMem(buffer, size), true, &sound->spec, &raw, &sound->length)) {
|
|
std::cout << "Failed to load WAV from memory: " << SDL_GetError() << '\n';
|
|
return nullptr;
|
|
}
|
|
sound->buffer.reset(raw); // adopta el SDL_malloc'd buffer
|
|
return sound.release();
|
|
}
|
|
|
|
inline auto loadSound(const char* filename) -> Sound* {
|
|
auto sound = std::make_unique<Sound>();
|
|
Uint8* raw = nullptr;
|
|
if (!SDL_LoadWAV(filename, &sound->spec, &raw, &sound->length)) {
|
|
std::cout << "Failed to load WAV file: " << SDL_GetError() << '\n';
|
|
return nullptr;
|
|
}
|
|
sound->buffer.reset(raw); // adopta el SDL_malloc'd buffer
|
|
return sound.release();
|
|
}
|
|
|
|
inline auto playSound(Sound* sound, int loop = 0, int group = 0) -> int {
|
|
if (!sound_enabled || (sound == nullptr)) { return -1; }
|
|
|
|
int channel = 0;
|
|
while (channel < MAX_SIMULTANEOUS_CHANNELS && channels[channel].state != ChannelState::FREE) { channel++; }
|
|
if (channel == MAX_SIMULTANEOUS_CHANNELS) {
|
|
// No hi ha canal lliure, reemplacem el primer
|
|
channel = 0;
|
|
}
|
|
|
|
return playSoundOnChannel(sound, channel, loop, group);
|
|
}
|
|
|
|
inline auto playSoundOnChannel(Sound* sound, int channel, int loop, int group) -> int {
|
|
if (!sound_enabled || (sound == nullptr)) { return -1; }
|
|
if (channel < 0 || channel >= MAX_SIMULTANEOUS_CHANNELS) { return -1; }
|
|
|
|
stopChannel(channel);
|
|
|
|
channels[channel].sound = sound;
|
|
channels[channel].times = loop;
|
|
channels[channel].pos = 0;
|
|
channels[channel].group = group;
|
|
channels[channel].state = ChannelState::PLAYING;
|
|
channels[channel].stream = SDL_CreateAudioStream(&channels[channel].sound->spec, &audio_spec);
|
|
|
|
if (channels[channel].stream == nullptr) {
|
|
std::cout << "Failed to create audio stream for sound!" << '\n';
|
|
channels[channel].state = ChannelState::FREE;
|
|
return -1;
|
|
}
|
|
|
|
SDL_PutAudioStreamData(channels[channel].stream, channels[channel].sound->buffer.get(), channels[channel].sound->length);
|
|
SDL_SetAudioStreamGain(channels[channel].stream, sound_volume[group]);
|
|
SDL_BindAudioStream(sdl_audio_device, channels[channel].stream);
|
|
|
|
return channel;
|
|
}
|
|
|
|
inline void deleteSound(Sound* sound) {
|
|
if (sound == nullptr) { return; }
|
|
for (int i = 0; i < MAX_SIMULTANEOUS_CHANNELS; i++) {
|
|
if (channels[i].sound == sound) { stopChannel(i); }
|
|
}
|
|
// buffer es destrueix automàticament via RAII (SdlFreeDeleter).
|
|
delete sound;
|
|
}
|
|
|
|
inline void pauseChannel(int channel) {
|
|
if (!sound_enabled) { return; }
|
|
|
|
if (channel == -1) {
|
|
for (auto& ch : channels) {
|
|
if (ch.state == ChannelState::PLAYING) {
|
|
ch.state = ChannelState::PAUSED;
|
|
SDL_UnbindAudioStream(ch.stream);
|
|
}
|
|
}
|
|
} else if (channel >= 0 && channel < MAX_SIMULTANEOUS_CHANNELS) {
|
|
if (channels[channel].state == ChannelState::PLAYING) {
|
|
channels[channel].state = ChannelState::PAUSED;
|
|
SDL_UnbindAudioStream(channels[channel].stream);
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void resumeChannel(int channel) {
|
|
if (!sound_enabled) { return; }
|
|
|
|
if (channel == -1) {
|
|
for (auto& ch : channels) {
|
|
if (ch.state == ChannelState::PAUSED) {
|
|
ch.state = ChannelState::PLAYING;
|
|
SDL_BindAudioStream(sdl_audio_device, ch.stream);
|
|
}
|
|
}
|
|
} else if (channel >= 0 && channel < MAX_SIMULTANEOUS_CHANNELS) {
|
|
if (channels[channel].state == ChannelState::PAUSED) {
|
|
channels[channel].state = ChannelState::PLAYING;
|
|
SDL_BindAudioStream(sdl_audio_device, channels[channel].stream);
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void stopChannel(int channel) {
|
|
if (channel == -1) {
|
|
for (auto& ch : channels) {
|
|
if (ch.state != ChannelState::FREE) {
|
|
if (ch.stream != nullptr) { SDL_DestroyAudioStream(ch.stream); }
|
|
ch.stream = nullptr;
|
|
ch.state = ChannelState::FREE;
|
|
ch.pos = 0;
|
|
ch.sound = nullptr;
|
|
}
|
|
}
|
|
} else if (channel >= 0 && channel < MAX_SIMULTANEOUS_CHANNELS) {
|
|
if (channels[channel].state != ChannelState::FREE) {
|
|
if (channels[channel].stream != nullptr) { SDL_DestroyAudioStream(channels[channel].stream); }
|
|
channels[channel].stream = nullptr;
|
|
channels[channel].state = ChannelState::FREE;
|
|
channels[channel].pos = 0;
|
|
channels[channel].sound = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
inline auto getChannelState(int channel) -> ChannelState {
|
|
if (!sound_enabled) { return ChannelState::DISABLED; }
|
|
if (channel < 0 || channel >= MAX_SIMULTANEOUS_CHANNELS) { return ChannelState::INVALID; }
|
|
|
|
return channels[channel].state;
|
|
}
|
|
|
|
inline auto setSoundVolume(float volume, int group = -1) -> float {
|
|
const float V = SDL_clamp(volume, 0.0F, 1.0F);
|
|
|
|
if (group == -1) {
|
|
std::ranges::fill(sound_volume, V);
|
|
} else if (group >= 0 && group < MAX_GROUPS) {
|
|
sound_volume[group] = V;
|
|
} else {
|
|
return V;
|
|
}
|
|
|
|
// Aplicar volum als canals actius.
|
|
for (auto& ch : channels) {
|
|
if ((ch.state == ChannelState::PLAYING) || (ch.state == ChannelState::PAUSED)) {
|
|
if (group == -1 || ch.group == group) {
|
|
if (ch.stream != nullptr) {
|
|
SDL_SetAudioStreamGain(ch.stream, sound_volume[ch.group]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return V;
|
|
}
|
|
|
|
inline void enableSound(bool value) {
|
|
if (!value) {
|
|
stopChannel(-1);
|
|
}
|
|
sound_enabled = value;
|
|
}
|
|
|
|
inline auto setVolume(float volume) -> float {
|
|
const float V = setMusicVolume(volume);
|
|
setSoundVolume(V, -1);
|
|
return V;
|
|
}
|
|
|
|
} // namespace Ja
|