react-native-audio-api/lib/module/utils/remoteHttpSource.js

react-native-audio-api provides system for controlling audio in React Native environment compatible with Web Audio API specification

"use strict";

import { isFfmpegEnabled } from "./flags.js";
export function isRemoteHttpUrl(path) {
  return path.startsWith('http://') || path.startsWith('https://');
}
function isHlsPlaylistUrl(path) {
  return path.split('?')[0].toLowerCase().includes('.m3u8');
}

/** Detect whether the server supports HTTP byte ranges (HEAD, then Range probe). */
async function detectHttpByteRanges(url, headers) {
  try {
    const headResponse = await fetch(url, {
      method: 'HEAD',
      headers
    });
    if (headResponse.ok) {
      const acceptRanges = headResponse.headers.get('Accept-Ranges')?.toLowerCase();
      if (acceptRanges === 'bytes') {
        return true;
      }
      return false;
    }
  } catch {
    // HEAD may be blocked or unsupported — fall through to a Range GET probe.
  }
  try {
    const rangeResponse = await fetch(url, {
      headers: {
        ...headers,
        Range: 'bytes=0-0'
      }
    });
    if (rangeResponse.status === 206) {
      return true;
    }

    // Server ignored Range and returned the full resource.
    if (rangeResponse.status === 200) {
      return false;
    }
  } catch {
    return false;
  }
  return false;
}
async function downloadRemoteHttpSource(url, headers) {
  const response = await fetch(url, {
    headers
  });
  if (!response.ok) {
    throw new Error(`Failed to download remote audio (${response.status}).`);
  }
  return response.arrayBuffer();
}

/**
 * Stream via native URL when FFmpeg is enabled and byte ranges work (or HLS);
 * otherwise download fully so miniaudio can decode without FFmpeg.
 */
export async function loadRemoteHttpSource(url, headers, forceDownload = false) {
  if (isHlsPlaylistUrl(url)) {
    return url;
  }
  if (!isFfmpegEnabled() || forceDownload) {
    return downloadRemoteHttpSource(url, headers);
  }
  const hasByteRanges = await detectHttpByteRanges(url, headers);
  if (hasByteRanges) {
    return url;
  }
  return downloadRemoteHttpSource(url, headers);
}
//# sourceMappingURL=remoteHttpSource.js.map