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+# rustecal-types-protobuf
+
+`rustecal-types-protobuf` provides a helper wrapper for Protobuf messages (using `prost`) to use with the typed eCAL Pub/Sub API.
+
+## Features
+
+- **ProtobufMessage<T>**: wrap and transport Protobuf messages  
+- Implements `PublisherMessage` and `SubscriberMessage` for seamless integration  
+- Zero-copy where possible via `Arc::from(ProtobufMessage)`
+- Static descriptor embedding via `include_bytes!` (optional)  
+- No extra dependencies beyond `prost`, `rustecal-core` and `rustecal-pubsub`  
+
+## Installation
+
+Add to your **workspace** `Cargo.toml`:
+
+```toml
+[dependencies]
+rustecal-types-protobuf = "0.1"
+```
+
+## Usage
+
+### Publisher Example
+
+```rust
+use std::sync::Arc;
+use rustecal::{Ecal, EcalComponents, TypedPublisher};
+use rustecal_types_protobuf::{ProtobufMessage, IsProtobufType};
+
+mod people      { include!(concat!(env!("OUT_DIR"), "/pb.people.rs")); }
+mod animal      { include!(concat!(env!("OUT_DIR"), "/pb.animal.rs")); }
+mod environment { include!(concat!(env!("OUT_DIR"), "/pb.environment.rs")); }
+
+use people::Person;
+impl IsProtobufType for Person {}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    Ecal::initialize(Some("protobuf publisher"), EcalComponents::DEFAULT)?;
+
+    let publisher = TypedPublisher::<ProtobufMessage<Person>>::new("person")?;
+
+    while Ecal::ok() {
+        let person = Person { id: 1, name: "Alice".into(), ..Default::default() };
+
+        let message = ProtobufMessage { data : Arc::from(person) };
+        publisher.send(&message);
+
+        std::thread::sleep(std::time::Duration::from_millis(500));
+    }
+
+    Ecal::finalize();
+    Ok(())
+}
+```
+
+### Subscriber Example
+
+```rust
+use rustecal::{Ecal, EcalComponents, TypedSubscriber};
+use rustecal_types_protobuf::{ProtobufMessage, IsProtobufType};
+
+mod people      { include!(concat!(env!("OUT_DIR"), "/pb.people.rs")); }
+mod animal      { include!(concat!(env!("OUT_DIR"), "/pb.animal.rs")); }
+mod environment { include!(concat!(env!("OUT_DIR"), "/pb.environment.rs")); }
+
+use people::Person;
+impl IsProtobufType for Person {}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    Ecal::initialize(Some("protobuf subscriber"), EcalComponents::DEFAULT)?;
+
+    let mut subscriber = TypedSubscriber::<ProtobufMessage<Person>>::new("person")?;
+    subscriber.set_callback(|message| {
+        println!("Received person: {}", message.payload.data.name)
+    });
+
+    while Ecal::ok() {
+        std::thread::sleep(std::time::Duration::from_millis(500));
+    }
+
+    Ecal::finalize();
+    Ok(())
+}
+```
+
+## Traits Reference
+
+- **`PublisherMessage`**
+  - `datatype() -> DataTypeInfo`
+  - `to_bytes(&self) -> Arc<[u8]>`
+
+- **`SubscriberMessage`**
+  - `datatype() -> DataTypeInfo`
+  - `from_bytes(bytes: Arc<[u8]>, _info: &DataTypeInfo) -> Option<Self>`
+
+## See Also
+
+- `rustecal-types-bytes` for raw binary data messages
+- `rustecal-types-string` for UTF-8 string messages
+- `rustecal-types-serde` for JSON/CBOR/MessagePack via Serde
+- Examples in the `rustecal-samples/pubsub` directory