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the audio stream of AVI files (PCM, MP3, AAC, µ-law, A-law) to PCM samples","maintainers":[{"name":"jamen","email":"jamenmarz@gmail.com"},{"name":"dfcreative","email":"df.creative@gmail.com"},{"name":"dy","email":"df.creative@gmail.com"}],"readme":"# @audio/decode-avi\n\nDecode the audio stream of AVI files to PCM float samples.
\nA pure-JS RIFF/AVI demuxer (OpenDML `AVIX` extensions included) that skips the video stream and routes the audio to the matching codec package, loaded on demand.\n\n[](https://npmjs.org/package/@audio/decode-avi/)\n\n```js\nimport decode, { decoder } from '@audio/decode-avi'\n\nlet { channelData, sampleRate } = await decode(aviBytes)\n\nlet dec = await decoder()\nlet head = await dec.decode(chunk1) // Promise on the chunk that completes the stream headers\nlet more = dec.decode(chunk2) // synchronous from then on\nlet tail = await dec.flush()\ndec.free()\n```\n\n## Codecs\n\n| `wFormatTag` | Codec | Decoded by |\n|---|---|---|\n| `0x0001`, `0x0003` (and `WAVE_FORMAT_EXTENSIBLE`) | PCM 8–32 bit int, 32/64 bit float | built in |\n| `0x0006`, `0x0007` | G.711 A-law, µ-law | built in |\n| `0x0055` | MP3 | [@audio/decode-mp3](../decode-mp3) |\n| `0x00FF` | AAC | [@audio/decode-aac](../decode-aac) |\n| `0x2000` | AC-3 | [@audio/decode-ac3](../decode-ac3) |\n| `0x2001` | DTS | [@audio/decode-dts](../decode-dts) |\n\nWMA and ADPCM streams throw an error naming the codec. The first `auds` stream is decoded.\n\nCodec packages are imported dynamically, which is unavailable inside an AudioWorklet — decode in the main thread or a Worker.\n\n## API\n\n### `decode(src: Uint8Array | ArrayBuffer): Promise`\n\nDecode a complete file.\n\n### `decoder(): Promise`\n\nStreaming decoder. `decode(chunk)` returns `AudioData`, or a Promise of it on the chunk that completes the stream headers while the codec module loads. `flush()` returns remaining samples and throws if no audio stream was found. `free()` releases codec resources.\n\n### `AudioData`\n\n```ts\n{ channelData: Float32Array[], sampleRate: number }\n```\n\n## License\n\n[ॐ](https://github.com/krishnized/license/) · [MIT](./LICENSE). Codec packages carry their own licenses.\n","readmeFilename":"README.md"}