{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "back-004",
  "type": "registry:block",
  "title": "Back 004",
  "author": "Kenney <https://kenney.nl>",
  "description": "A concise sound effect for going back in a sequence or returning to a prior state in an interface.",
  "files": [
    {
      "path": "registry/soundcn/sounds/back-004/back-004.ts",
      "content": "import type { SoundAsset } from \"@/lib/sound-types\";\n\nexport const back004Sound: SoundAsset = {\n  name: \"back-004\",\n  dataUri: \"data:audio/mpeg;base64,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\",\n  duration: 0.094,\n  format: \"mp3\",\n  license: \"CC0\",\n  author: \"Kenney\",\n};\n",
      "type": "registry:lib"
    },
    {
      "path": "registry/soundcn/lib/sound-types.ts",
      "content": "export interface SoundAsset {\r\n  /** Unique identifier for the sound */\r\n  name: string;\r\n  /** Base64-encoded data URI (data:audio/mpeg;base64,...) */\r\n  dataUri: string;\r\n  /** Duration in seconds */\r\n  duration: number;\r\n  /** Audio format */\r\n  format: \"mp3\" | \"wav\" | \"ogg\";\r\n  /** License identifier */\r\n  license: \"CC0\" | \"OGA-BY\" | \"MIT\";\r\n  /** Original author/creator */\r\n  author: string;\r\n}\r\n\r\nexport interface UseSoundOptions {\r\n  /** Volume level from 0 to 1. Default: 1 */\r\n  volume?: number;\r\n  /** Playback speed multiplier. Default: 1 */\r\n  playbackRate?: number;\r\n  /** If true, calling play() stops current playback first. Default: false */\r\n  interrupt?: boolean;\r\n  /** If false, play() does nothing. Useful for user preferences. Default: true */\r\n  soundEnabled?: boolean;\r\n  /** Called when playback starts */\r\n  onPlay?: () => void;\r\n  /** Called when playback ends naturally */\r\n  onEnd?: () => void;\r\n  /** Called when pause() is called */\r\n  onPause?: () => void;\r\n  /** Called when stop() is called */\r\n  onStop?: () => void;\r\n}\r\n\r\nexport type PlayFunction = (overrides?: {\r\n  volume?: number;\r\n  playbackRate?: number;\r\n}) => void;\r\n\r\nexport interface SoundControls {\r\n  stop: () => void;\r\n  pause: () => void;\r\n  isPlaying: boolean;\r\n  duration: number | null;\r\n  sound: SoundAsset;\r\n}\r\n\r\nexport type UseSoundReturn = readonly [PlayFunction, SoundControls];\r\n",
      "type": "registry:lib"
    },
    {
      "path": "registry/soundcn/lib/sound-engine.ts",
      "content": "let audioContext: AudioContext | null = null;\nconst bufferCache = new Map<string, AudioBuffer>();\n\nexport function getAudioContext(): AudioContext {\n  if (!audioContext) {\n    audioContext = new AudioContext();\n  }\n  return audioContext;\n}\n\nexport async function decodeAudioData(dataUri: string): Promise<AudioBuffer> {\n  const cached = bufferCache.get(dataUri);\n  if (cached) return cached;\n\n  const ctx = getAudioContext();\n  const base64 = dataUri.split(\",\")[1];\n  const binaryString = atob(base64);\n  const bytes = new Uint8Array(binaryString.length);\n  for (let i = 0; i < binaryString.length; i++) {\n    bytes[i] = binaryString.charCodeAt(i);\n  }\n\n  const audioBuffer = await ctx.decodeAudioData(bytes.buffer.slice(0));\n  bufferCache.set(dataUri, audioBuffer);\n  return audioBuffer;\n}\n\nexport interface PlaySoundOptions {\n  volume?: number;\n  playbackRate?: number;\n  onEnd?: () => void;\n}\n\nexport interface SoundPlayback {\n  stop: () => void;\n}\n\nexport async function playSound(\n  dataUri: string,\n  options: PlaySoundOptions = {}\n): Promise<SoundPlayback> {\n  const { volume = 1, playbackRate = 1, onEnd } = options;\n  const ctx = getAudioContext();\n  if (ctx.state === \"suspended\") {\n    await ctx.resume();\n  }\n\n  const buffer = await decodeAudioData(dataUri);\n  const source = ctx.createBufferSource();\n  const gain = ctx.createGain();\n\n  source.buffer = buffer;\n  source.playbackRate.value = playbackRate;\n  gain.gain.value = volume;\n\n  source.connect(gain);\n  gain.connect(ctx.destination);\n\n  source.onended = () => {\n    onEnd?.();\n  };\n\n  source.start(0);\n\n  return {\n    stop: () => {\n      try {\n        source.stop();\n      } catch {\n        // No-op if already stopped.\n      }\n    },\n  };\n}\n",
      "type": "registry:lib"
    }
  ],
  "meta": {
    "duration": 0.094,
    "format": "mp3",
    "sizeKb": 1,
    "license": "CC0",
    "tags": [
      "back",
      "004"
    ],
    "keywords": [
      "back",
      "undo",
      "return",
      "navigate",
      "ui",
      "menu",
      "previous",
      "step",
      "concise",
      "short",
      "quick",
      "cancel",
      "dismiss",
      "close",
      "feedback",
      "digital",
      "snappy",
      "revert",
      "action",
      "transition",
      "swift"
    ]
  },
  "categories": [
    "back"
  ]
}