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October 23, 2024 17:12
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Very simple sound abstraction in Odin over WebAudio and MiniAudio
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| <!DOCTYPE html> | |
| <html lang="en" style="height: 100%;"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <title>Yo</title> | |
| </head> | |
| <body id="body" style="height: 100%; padding: 0; margin: 0; overflow: hidden;"> | |
| <canvas id="wgpu-canvas"></canvas> | |
| <script type="text/javascript" src="odin.js"></script> | |
| <script type="text/javascript" src="sound.js"></script> | |
| <script type="text/javascript"> | |
| const mem = new WebAssembly.Memory({ initial: 2000, maximum: 65536, shared: false }); | |
| const memInterface = new odin.WasmMemoryInterface(); | |
| memInterface.setMemory(mem); | |
| const soundInterface = new odin.SoundInterface(memInterface); | |
| odin.runWasm("module.wasm", null, { | |
| sound: soundInterface.getInterface(), | |
| }, memInterface, /*intSize=8*/); | |
| </script> | |
| </body> | |
| </html> |
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| (function() { | |
| const BONK = 0; | |
| const SCORE = 1; | |
| class SoundInterface { | |
| /** | |
| * @param {WasmMemoryInterface} mem | |
| */ | |
| constructor(mem) { | |
| this.mem = mem; | |
| this.audioCtx = new AudioContext(); | |
| this.sounds = {}; | |
| } | |
| async load(idx, filepath) { | |
| try { | |
| const response = await fetch(filepath); | |
| const buffer = await this.audioCtx.decodeAudioData(await response.arrayBuffer()); | |
| this.sounds[idx] = buffer; | |
| } catch (err) { | |
| console.error("sound: load: " + filepath, err); | |
| } | |
| } | |
| getInterface() { | |
| return { | |
| init: async () => { | |
| this.load(BONK, "impactPlank_medium_000.ogg"); | |
| this.load(SCORE, "laserLarge_002.ogg"); | |
| }, | |
| play: (sound) => { | |
| const source = this.audioCtx.createBufferSource(); | |
| source.buffer = this.sounds[sound]; | |
| source.connect(this.audioCtx.destination); | |
| source.start(); | |
| }, | |
| }; | |
| } | |
| } | |
| window.odin = window.odin || {}; | |
| window.odin.SoundInterface = SoundInterface; | |
| })(); |
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| package sound | |
| Sound :: enum { | |
| Bonk, | |
| Score, | |
| } | |
| init :: proc() { | |
| _init() | |
| } | |
| play :: proc(sound: Sound) { | |
| _play(sound) | |
| } |
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| //+private | |
| package sound | |
| foreign import soundjs "sound" | |
| foreign soundjs { | |
| @(link_name="init") | |
| _init :: proc "contextless" () --- | |
| @(link_name="play") | |
| _play :: proc "contextless" (sound: Sound) --- | |
| } |
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| //+build !js | |
| //+private | |
| package sound | |
| import "core:fmt" | |
| import "core:log" | |
| import ma "vendor:miniaudio" | |
| Engine :: struct { | |
| daddy: ma.engine, | |
| sounds: [Sound]ma.sound, | |
| } | |
| engine: Engine | |
| _init :: proc() { | |
| if result := ma.engine_init(nil, &engine.daddy); result != .SUCCESS { | |
| fmt.panicf("sound: init: engine: %v", result) | |
| } | |
| flags := u32(ma.sound_flags.ASYNC | ma.sound_flags.DECODE) | |
| if result := ma.sound_init_from_file( | |
| &engine.daddy, | |
| "impactPlank_medium_000.ogg", | |
| flags, nil, nil, | |
| &engine.sounds[.Bonk], | |
| ); result != .SUCCESS { | |
| fmt.panicf("sound: init: bonk: %v", result) | |
| } | |
| if result := ma.sound_init_from_file( | |
| &engine.daddy, | |
| "laserLarge_002.ogg", | |
| flags, nil, nil, | |
| &engine.sounds[.Score], | |
| ); result != .SUCCESS { | |
| fmt.panicf("sound: init: score: %v", result) | |
| } | |
| } | |
| _play :: proc(sound: Sound) { | |
| s := &engine.sounds[sound] | |
| // if ma.sound_is_playing(s) && !ma.sound_at_end(s) { | |
| // log.warnf("sound: play: %v: already playing", sound) | |
| // return | |
| // } | |
| // | |
| // ma.sound_set_start | |
| if result := ma.sound_start(s); result != .SUCCESS { | |
| log.errorf("sound: play: %v: %v", sound, result) | |
| } | |
| } |
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