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Update TTS Provider Architecture status to v0.1.13

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Jamie Pine
2026-01-31 02:11:41 -08:00
parent 2bc243f93e
commit cb541521d2
1 changed files with 188 additions and 156 deletions
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docs/plans/TTS_PROVIDER_ARCHITECTURE.md
+65 -33
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@@ -1,6 +1,6 @@
# TTS Provider Architecture
**Status:** Planned for v0.2.0
**Status:** Planned for v0.1.13
**Created:** 2025-01-31
**Problem:** GitHub 2GB release limit + poor UX for frequent updates requiring 2.4GB re-downloads
@@ -14,6 +14,7 @@ Split the monolithic backend into modular components:
2. **TTS Providers** (downloadable plugins): Separate executables for model inference
This architecture solves:
- ✅ GitHub 2GB release artifact limit
- ✅ Frequent app updates without re-downloading large ML models
- ✅ User choice of compute backend (CPU/GPU/Cloud)
@@ -68,6 +69,7 @@ This architecture solves:
### Current Architecture Issues
**Monolithic Binary:**
- CPU version: ~295MB
- CUDA version: ~2.37GB
- GitHub releases: 2GB file size limit (BLOCKED)
@@ -75,6 +77,7 @@ This architecture solves:
- Poor UX: update app → restart → download CUDA update → restart again
**User Pain Points:**
1. Cannot release CUDA version on GitHub (over 2GB)
2. Every app update forces 2.4GB re-download for GPU users
3. No flexibility (can't use OpenAI, remote servers, etc.)
@@ -91,6 +94,7 @@ This architecture solves:
**Size:** ~150-200MB
**Includes:**
- Tauri runtime + React UI
- FastAPI backend (pure Python, no PyTorch)
- Whisper model (tiny, ~50MB)
@@ -99,6 +103,7 @@ This architecture solves:
- Provider management system
**Does NOT include:**
- PyTorch (CPU or CUDA)
- TTS models (Qwen3-TTS)
- Heavy ML dependencies
@@ -113,6 +118,7 @@ This architecture solves:
**Size:** ~300MB
**Includes:**
- PyTorch CPU build
- Qwen3-TTS package
- Transformers
@@ -129,6 +135,7 @@ This architecture solves:
**Size:** ~2.4GB
**Includes:**
- PyTorch CUDA build (cu121)
- Qwen3-TTS package
- CUDA runtime, cuDNN, cuBLAS
@@ -146,6 +153,7 @@ This architecture solves:
**Size:** ~800MB
**Includes:**
- MLX framework
- MLX-optimized Qwen3-TTS
- Metal acceleration
@@ -161,11 +169,13 @@ This architecture solves:
**Size:** 0MB
**How it works:**
- User provides URL to their own TTS server
- Backend proxies requests to that server
- Implements API spec from `EXTERNAL_PROVIDERS.md`
**Use cases:**
- AMD GPU users running their own server
- Team deployments with shared GPU server
- Cloud hosting (Modal, RunPod, Replicate)
@@ -178,11 +188,13 @@ This architecture solves:
**Size:** 0MB
**How it works:**
- User provides OpenAI API key
- Backend wraps OpenAI Audio API
- Voice profiles map to OpenAI voices
**Benefits:**
- Zero local compute
- Pay-per-use
- Instant setup
@@ -200,10 +212,13 @@ All TTS providers must implement these endpoints:
Generate speech from text.
**Request:**
```json
{
"text": "Hello world!",
"voice_prompt": { /* voice prompt object */ },
"voice_prompt": {
/* voice prompt object */
},
"language": "en",
"seed": 12345,
"model_size": "1.7B"
@@ -211,6 +226,7 @@ Generate speech from text.
```
**Response:**
```json
{
"audio": "base64-encoded-audio",
@@ -224,13 +240,17 @@ Generate speech from text.
Create voice prompt from reference audio.
**Request:** (multipart/form-data)
- `audio`: Audio file
- `reference_text`: Transcript
**Response:**
```json
{
"voice_prompt": { /* serialized prompt */ }
"voice_prompt": {
/* serialized prompt */
}
}
```
@@ -239,6 +259,7 @@ Create voice prompt from reference audio.
Health check.
**Response:**
```json
{
"status": "healthy",
@@ -254,6 +275,7 @@ Health check.
Model status.
**Response:**
```json
{
"model_loaded": true,
@@ -434,6 +456,7 @@ class ProviderInstaller:
```
**Provider Storage Location:**
- Windows: `%APPDATA%/voicebox/providers/`
- macOS: `~/Library/Application Support/voicebox/providers/`
- Linux: `~/.local/share/voicebox/providers/`
@@ -448,23 +471,24 @@ class ProviderInstaller:
```tsx
export function ProviderSettings() {
const [selectedProvider, setSelectedProvider] = useState<ProviderType>('auto');
const { data: installedProviders } = useQuery({
queryKey: ['providers', 'installed'],
queryFn: () => apiClient.getInstalledProviders()
const [selectedProvider, setSelectedProvider] =
useState<ProviderType>("auto");
const {data: installedProviders} = useQuery({
queryKey: ["providers", "installed"],
queryFn: () => apiClient.getInstalledProviders(),
});
return (
<Card>
<CardHeader>
<CardTitle>TTS Provider</CardTitle>
<CardDescription>
Choose how Voicebox generates speech
</CardDescription>
<CardDescription>Choose how Voicebox generates speech</CardDescription>
</CardHeader>
<CardContent>
<RadioGroup value={selectedProvider} onValueChange={setSelectedProvider}>
<RadioGroup
value={selectedProvider}
onValueChange={setSelectedProvider}
>
{/* Auto-detect */}
<div className="flex items-center space-x-2">
<RadioGroupItem value="auto" id="auto" />
@@ -479,7 +503,11 @@ export function ProviderSettings() {
{/* PyTorch CUDA */}
<div className="flex items-center justify-between">
<div className="flex items-center space-x-2">
<RadioGroupItem value="pytorch-cuda" id="cuda" disabled={!gpuAvailable} />
<RadioGroupItem
value="pytorch-cuda"
id="cuda"
disabled={!gpuAvailable}
/>
<Label htmlFor="cuda">
<div className="font-medium">PyTorch CUDA (NVIDIA GPU)</div>
<div className="text-sm text-muted-foreground">
@@ -487,8 +515,11 @@ export function ProviderSettings() {
</div>
</Label>
</div>
{!installedProviders?.includes('pytorch-cuda') && gpuAvailable && (
<Button onClick={() => downloadProvider('pytorch-cuda')} size="sm">
{!installedProviders?.includes("pytorch-cuda") && gpuAvailable && (
<Button
onClick={() => downloadProvider("pytorch-cuda")}
size="sm"
>
Download (2.4GB)
</Button>
)}
@@ -505,8 +536,8 @@ export function ProviderSettings() {
</div>
</Label>
</div>
{!installedProviders?.includes('pytorch-cpu') && (
<Button onClick={() => downloadProvider('pytorch-cpu')} size="sm">
{!installedProviders?.includes("pytorch-cpu") && (
<Button onClick={() => downloadProvider("pytorch-cpu")} size="sm">
Download (300MB)
</Button>
)}
@@ -524,8 +555,8 @@ export function ProviderSettings() {
</div>
</Label>
</div>
{!installedProviders?.includes('mlx') && (
<Button onClick={() => downloadProvider('mlx')} size="sm">
{!installedProviders?.includes("mlx") && (
<Button onClick={() => downloadProvider("mlx")} size="sm">
Download (800MB)
</Button>
)}
@@ -543,11 +574,8 @@ export function ProviderSettings() {
</div>
</Label>
</div>
{selectedProvider === 'remote' && (
<Input
placeholder="http://your-server:8000"
className="ml-6"
/>
{selectedProvider === "remote" && (
<Input placeholder="http://your-server:8000" className="ml-6" />
)}
</div>
@@ -562,15 +590,10 @@ export function ProviderSettings() {
</div>
</Label>
</div>
{selectedProvider === 'openai' && (
<Input
type="password"
placeholder="sk-..."
className="ml-6"
/>
{selectedProvider === "openai" && (
<Input type="password" placeholder="sk-..." className="ml-6" />
)}
</div>
</RadioGroup>
</CardContent>
</Card>
@@ -718,7 +741,7 @@ Providers have their own version numbers, independent of the main app:
**Example:**
| App Version | Min Provider Version | Max Provider Version |
|-------------|---------------------|---------------------|
| ----------- | -------------------- | -------------------- |
| v0.2.0 | v1.0.0 | v1.x.x |
| v0.3.0 | v1.0.0 | v1.x.x |
| v0.4.0 | v1.2.0 | v1.x.x |
@@ -735,6 +758,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
```
**UI shows warning if incompatible:**
```
⚠️ Provider version 0.9.0 is outdated. Update to v1.0.0+
```
@@ -748,6 +772,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
1. User downloads and installs Voicebox (~150MB)
2. App launches → detects no TTS provider installed
3. Shows setup wizard:
```
Choose your TTS provider:
@@ -769,6 +794,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
[ ] OpenAI API
API Key: ________________
```
4. User selects provider → downloads with progress bar
5. Provider installs to AppData/Application Support
6. App starts provider → ready to use
@@ -819,7 +845,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
## Benefits
| Benefit | Details |
|---------|---------|
| ----------------------------- | --------------------------------------------------------- |
| **GitHub Releases Work** | Main app ~150MB << 2GB limit |
| **Fast Updates** | UI/feature updates don't require re-downloading providers |
| **User Choice** | CPU, CUDA, MLX, OpenAI, remote server |
@@ -838,6 +864,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
**Question:** Should providers have independent versions or match app version?
**Options:**
- A. Independent (providers: v1.x, app: v0.2.x)
- B. Matched (both use v0.2.x)
@@ -850,6 +877,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
**Question:** Should providers auto-update separately from app?
**Options:**
- A. Manual updates only (user clicks "Update Provider")
- B. Optional auto-update (user can enable)
- C. Always auto-update
@@ -863,6 +891,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
**Question:** How does app find installed providers?
**Options:**
- A. Check standard paths in AppData/Application Support
- B. Registry (Windows) / plist (macOS)
- C. Config file with provider locations
@@ -876,6 +905,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
**Question:** What if no provider is installed?
**Options:**
- A. Show setup wizard on first launch
- B. Block app until provider installed
- C. Allow app to run in "demo mode" (transcription only)
@@ -889,6 +919,7 @@ async def check_provider_compatibility(provider_version: str) -> bool:
**Question:** Should provider start automatically with app?
**Options:**
- A. Always start selected provider on app launch
- B. Start on-demand (when user generates speech)
- C. User preference
@@ -928,5 +959,6 @@ If you want to build a custom TTS provider:
4. Share in GitHub Discussions
**Questions?**
- GitHub Issues: [voicebox/issues](https://github.com/jamiepine/voicebox/issues)
- Discord: Coming soon