initialize Electron desktop app and remove unused files

2026-10-25 01:09:01 +08:00
commit 01d9e301fc
877 changed files with 262513 additions and 0 deletions
@@ -0,0 +1,45 @@
+import { describe, expect, it } from 'vitest'
+
+import { transcodeToPcmS16le } from '../../packages/server/src/services/hermes/stt-providers/audio-convert'
+
+function wavS16le(samples: number[], sampleRate: number, channels = 1): Buffer {
+  const dataSize = samples.length * 2
+  const header = Buffer.alloc(44)
+  header.write('RIFF', 0)
+  header.writeUInt32LE(36 + dataSize, 4)
+  header.write('WAVE', 8)
+  header.write('fmt ', 12)
+  header.writeUInt32LE(16, 16)
+  header.writeUInt16LE(1, 20)
+  header.writeUInt16LE(channels, 22)
+  header.writeUInt32LE(sampleRate, 24)
+  header.writeUInt32LE(sampleRate * channels * 2, 28)
+  header.writeUInt16LE(channels * 2, 32)
+  header.writeUInt16LE(16, 34)
+  header.write('data', 36)
+  header.writeUInt32LE(dataSize, 40)
+
+  const data = Buffer.alloc(dataSize)
+  samples.forEach((sample, index) => {
+    data.writeInt16LE(sample, index * 2)
+  })
+  return Buffer.concat([header, data])
+}
+
+describe('audio-convert', () => {
+  it('decodes WAV to MCU PCM without ffmpeg', async () => {
+    const wav = wavS16le([0, 16384, -16384, 0], 8000)
+
+    const result = await transcodeToPcmS16le(wav, 'audio/wav', { sampleRate: 16000 })
+
+    expect(result.mimeType).toBe('audio/x-pcm')
+    expect(result.fileName).toBe('audio.pcm')
+    expect(result.audio.length).toBe(16)
+  })
+
+  it('rejects unsupported MCU PCM decode formats', async () => {
+    await expect(
+      transcodeToPcmS16le(Buffer.from('not audio'), 'audio/ogg', { sampleRate: 16000 }),
+    ).rejects.toThrow('unsupported audio format for MCU PCM decode')
+  })
+})