Replace Ollama/Windows OCR with ocrs, add clipboard image deduplication

Cargo.lock

@@ -1370,6 +1370,16 @@ version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef25905e51abafe4dcea6c15fec58c57b601cdbd0ee53d22ea1d3016c587d39b"
 
+[[package]]
+name = "flatbuffers"
+version = "24.12.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f1baf0dbf96932ec9a3038d57900329c015b0bfb7b63d904f3bc27e2b02a096"
+dependencies = [
+ "bitflags 1.3.2",
+ "rustc_version",
+]
+
 [[package]]
 name = "flate2"
 version = "1.1.10"
@@ -2636,9 +2646,11 @@ dependencies = [
  "ignore",
  "image",
  "notify",
+ "ocrs",
  "redb 4.3.0",
  "reqwest",
  "rmcp",
+ "rten",
  "schemars",
  "serde",
  "serde_json",
@@ -3107,6 +3119,21 @@ dependencies = [
  "objc2-core-foundation",
 ]
 
+[[package]]
+name = "ocrs"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e4192a7dbc7570398ef97ab2606799703b6ea11da53f637d705d44546614435"
+dependencies = [
+ "anyhow",
+ "rayon",
+ "rten",
+ "rten-imageproc",
+ "rten-tensor",
+ "thiserror 2.0.20",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.4"
@@ -3872,6 +3899,123 @@ dependencies = [
  "rmp",
 ]
 
+[[package]]
+name = "rten"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf7741649977427aa13009537ac9a8fe1a503b0aa58784069ce8f117e47eb6ab"
+dependencies = [
+ "flatbuffers",
+ "num_cpus",
+ "rayon",
+ "rten-base",
+ "rten-gemm",
+ "rten-model-file",
+ "rten-onnx",
+ "rten-parallel",
+ "rten-shape-inference",
+ "rten-simd",
+ "rten-tensor",
+ "rten-vecmath",
+ "rustc-hash",
+ "smallvec",
+ "typeid",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "rten-base"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413dc975c7a3d0e6da0b146cd0387e3d389cceab0fc48328bfa716c7f2ae1b1e"
+
+[[package]]
+name = "rten-gemm"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8efc07c654d4b3f8d81e2efd8b13aea7475568395289e5bb35393411aa6a451e"
+dependencies = [
+ "rayon",
+ "rten-base",
+ "rten-parallel",
+ "rten-simd",
+ "rten-tensor",
+]
+
+[[package]]
+name = "rten-imageproc"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18726eae9614e23a400560eb3a5e3fdb06526914c31aadaf767f14afde7680dd"
+dependencies = [
+ "rten-tensor",
+]
+
+[[package]]
+name = "rten-model-file"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04ea9e630b377f9249ff3c290466fef282319f86d13d560964209104cd3af542"
+dependencies = [
+ "flatbuffers",
+ "rten-base",
+]
+
+[[package]]
+name = "rten-onnx"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96944374568990b8d1bbc5bae5957585866f9dd8256130460405730948bfd42e"
+
+[[package]]
+name = "rten-parallel"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba9075b130f81df7be82496ea3a9bbf20fe9e75f106a22b0ece8700850f8f664"
+dependencies = [
+ "rayon",
+ "rten-base",
+]
+
+[[package]]
+name = "rten-shape-inference"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89289c26b6a5248fccf4d67627596848a03ed31888e6ce4ba6f666c689258122"
+dependencies = [
+ "rten-tensor",
+ "smallvec",
+]
+
+[[package]]
+name = "rten-simd"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f0c01294eb782adca256aa130b48a04006d03763073a68f45a9c33b982ea556"
+
+[[package]]
+name = "rten-tensor"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf72556ba231d7af50238d26dd264856a2149c6369694eb79b22644c8280c81b"
+dependencies = [
+ "rayon",
+ "rten-base",
+ "rten-parallel",
+ "smallvec",
+ "typeid",
+]
+
+[[package]]
+name = "rten-vecmath"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1007f05160f9ea2ce4e9c67324e5bafb27ae1e5302d0c6b1ea4db0d35fed78ee"
+dependencies = [
+ "rten-base",
+ "rten-simd",
+]
+
 [[package]]
 name = "rust-stemmers"
 version = "1.2.0"

server/Cargo.toml

@@ -49,6 +49,8 @@ notify = "7"
 blake3 = "1.8"
 tokio-stream = { version = "0.1", features = ["sync"] }
 chrono = { version = "0.4.45", features = ["serde"] }
+ocrs = "0.13.1"
+rten = "0.26.0"
 
 [build-dependencies]
 chrono = "0.4.45"

server/src/handlers/vision.rs

@@ -289,32 +289,70 @@ pub fn get_windows_html_clipboard() -> Option<String> {
     }
     None
 }
+use ocrs::{OcrEngine, OcrEngineParams};
+use std::sync::OnceLock;
 
-#[cfg(target_os = "windows")]
+static OCR_ENGINE: OnceLock<OcrEngine> = OnceLock::new();
-pub fn perform_windows_ocr(img: &image::DynamicImage) -> Option<String> {
-    use windows::Graphics::Imaging::BitmapDecoder;
-    use windows::Media::Ocr::OcrEngine;
-    use windows::Storage::Streams::{DataWriter, InMemoryRandomAccessStream};
 
-    let mut png_bytes = std::io::Cursor::new(Vec::new());
+pub async fn ensure_ocr_engine() -> Option<&'static OcrEngine> {
-    img.write_to(&mut png_bytes, image::ImageFormat::Png).ok()?;
+    if let Some(engine) = OCR_ENGINE.get() {
-    let bytes = png_bytes.into_inner();
+        return Some(engine);
+    }
     
-    let stream = InMemoryRandomAccessStream::new().ok()?;
+    let cache_dir = dirs::home_dir()?.join(".gemini/mcp_memory/models");
-    let writer = DataWriter::CreateDataWriter(&stream).ok()?;
+    let _ = std::fs::create_dir_all(&cache_dir);
-    writer.WriteBytes(&bytes).ok()?;
-    writer.StoreAsync().ok()?.join().ok()?;
-    writer.FlushAsync().ok()?.join().ok()?;
-    stream.Seek(0).ok()?;
     
-    let decoder = BitmapDecoder::CreateAsync(&stream).ok()?.join().ok()?;
+    let det_path = cache_dir.join("text-detection.rten");
-    let software_bitmap = decoder.GetSoftwareBitmapAsync().ok()?.join().ok()?;
+    if !det_path.exists() || std::fs::metadata(&det_path).map(|m| m.len()).unwrap_or(0) < 100_000 {
+        if let Ok(resp) = reqwest::get("https://huggingface.co/robertknight/ocrs/resolve/main/text-detection.rten").await {
+            if let Ok(bytes) = resp.bytes().await {
+                let _ = std::fs::write(&det_path, bytes);
+            }
+        }
+    }
     
-    let engine = OcrEngine::TryCreateFromUserProfileLanguages().ok()?;
+    let rec_path = cache_dir.join("text-recognition.rten");
-    let result = engine.RecognizeAsync(&software_bitmap).ok()?.join().ok()?;
+    if !rec_path.exists() || std::fs::metadata(&rec_path).map(|m| m.len()).unwrap_or(0) < 100_000 {
-    let text = result.Text().ok()?;
+        if let Ok(resp) = reqwest::get("https://huggingface.co/robertknight/ocrs/resolve/main/text-recognition.rten").await {
-    let s = text.to_string();
+            if let Ok(bytes) = resp.bytes().await {
-    let trimmed = s.trim();
+                let _ = std::fs::write(&rec_path, bytes);
+            }
+        }
+    }
+
+    let mut params = OcrEngineParams::default();
+    let det_model = rten::Model::load_file(&det_path).ok()?;
+    let rec_model = rten::Model::load_file(&rec_path).ok()?;
+    params.detection_model = Some(det_model);
+    params.recognition_model = Some(rec_model);
+
+    if let Ok(engine) = OcrEngine::new(params) {
+        let _ = OCR_ENGINE.set(engine);
+        OCR_ENGINE.get()
+    } else {
+        None
+    }
+}
+
+pub fn perform_ocrs_ocr(engine: &OcrEngine, img: &image::DynamicImage) -> Option<String> {
+    let rgb_img = img.to_rgb8();
+    let img_source = ocrs::ImageSource::from_bytes(
+        rgb_img.as_raw(),
+        rgb_img.dimensions(),
+    ).ok()?;
+
+    let ocr_input = engine.prepare_input(img_source).ok()?;
+    let word_rects = engine.detect_words(&ocr_input).ok()?;
+    let line_rects = engine.find_text_lines(&ocr_input, &word_rects);
+    let texts = engine.recognize_text(&ocr_input, &line_rects).ok()?;
+
+    let mut out = String::new();
+    for text in texts.into_iter().flatten() {
+        out.push_str(&text.to_string());
+        out.push('\n');
+    }
+    
+    let trimmed = out.trim();
     if trimmed.is_empty() {
         None
     } else {
@@ -426,22 +464,28 @@ pub async fn process_clipboard_snapshot(state: Arc<MemoryState>) {
             let path_str = file_path.to_string_lossy().to_string();
             let wsl_path = to_wsl_path(&path_str);
 
-            // Deterministic OCR
+            let mut ocr_text_opt: Option<String> = None;
+
+            if let Some(engine) = ensure_ocr_engine().await {
                 let img_clone = img.clone();
-            let ocr_text_opt: Option<String> = tokio::task::spawn_blocking(move || {
+                ocr_text_opt = tokio::task::spawn_blocking(move || {
-                #[cfg(target_os = "windows")]
+                    perform_ocrs_ocr(engine, &img_clone)
-                {
-                    perform_windows_ocr(&img_clone)
-                }
-                #[cfg(not(target_os = "windows"))]
-                {
-                    None::<String>
-                }
                 })
                 .await
                 .ok()
                 .flatten();
+            }
 
+            let mut cache = state.clipboard_cache.write().await;
+            
+            // Check if this is an identical image captured rapidly
+            let is_duplicate = if let Some(ref prev) = cache.last_image {
+                prev.width == w && prev.height == h && prev.size_bytes == size_bytes
+            } else {
+                false
+            };
+            
+            if !is_duplicate {
                 // Index OCR text into Tantivy for omni_search
                 if let Some(ref text) = ocr_text_opt {
                     let doc_id = format!("clipboard_{}", now_ms);
@@ -463,7 +507,6 @@ pub async fn process_clipboard_snapshot(state: Arc<MemoryState>) {
                     ocr_text: ocr_text_opt,
                 };
 
-            let mut cache = state.clipboard_cache.write().await;
                 cache.last_image = Some(cached.clone());
                 cache
                     .history
@@ -471,6 +514,7 @@ pub async fn process_clipboard_snapshot(state: Arc<MemoryState>) {
                 if cache.history.len() > 20 {
                     cache.history.pop_back();
                 }
+            }
             return;
         }
     }
@@ -783,17 +827,18 @@ impl McpTool for ClipboardHandler {
                 .to_string())
             }
             ClipboardAction::Read => {
-                let (mut out, b64_opt) =
+                let engine = ensure_ocr_engine().await;
-                    tokio::task::spawn_blocking(move || -> crate::error::Result<(serde_json::Map<String, Value>, Option<String>)> {
+
+                let out =
+                    tokio::task::spawn_blocking(move || -> crate::error::Result<serde_json::Map<String, Value>> {
                         let mut out = serde_json::Map::new();
-                        let mut b64_opt = None;
 
                         if let Some(text) = get_native_clipboard_text() {
                             out.insert("text".into(), json!(text));
                         }
 
                         if let Some(dynamic_img) = get_native_clipboard_image() {
-                            let mut img = dynamic_img;
+                            let mut img = dynamic_img.clone();
                             let max_dim = 1440;
                             if img.width() > max_dim || img.height() > max_dim {
                                 img = img.resize(max_dim, max_dim, FilterType::Lanczos3);
@@ -804,9 +849,6 @@ impl McpTool for ClipboardHandler {
                             let mut encoder = image::codecs::jpeg::JpegEncoder::new_with_quality(&mut jpeg_bytes, 88);
                             if encoder.encode(&rgb_img, rgb_img.width(), rgb_img.height(), image::ExtendedColorType::Rgb8).is_ok() {
                                 let bytes = jpeg_bytes.into_inner();
-                                use base64::Engine;
-                                let b64 = base64::engine::general_purpose::STANDARD.encode(&bytes);
-                                b64_opt = Some(b64);
 
                                 let cache_dir = dirs::home_dir()
                                     .unwrap_or_default()
@@ -820,26 +862,18 @@ impl McpTool for ClipboardHandler {
                                     out.insert("image_path_wsl".into(), json!(wsl_path));
                                 }
                             }
+                            
+                            if let Some(eng) = engine {
+                                if let Some(ocr_text) = perform_ocrs_ocr(eng, &dynamic_img) {
+                                    out.insert("image_analysis".to_string(), json!(ocr_text.trim()));
                                 }
-                        Ok((out, b64_opt))
+                            }
+                        }
+                        Ok(out)
                     })
                     .await
                     .map_err(|e| crate::error::AppError::Internal(format!("Task panic: {}", e)))??;
 
-                if let Some(b64_str) = b64_opt {
-                    if state.ollama.is_available().await
-                        && let Ok(analysis) = state
-                            .ollama
-                            .generate_vision(
-                                "Describe the content, text, or UI layout of this image concisely:",
-                                &b64_str,
-                            )
-                            .await
-                    {
-                        out.insert("image_analysis".to_string(), json!(analysis.trim()));
-                    }
-                }
-
                 state.record_activity("clipboard", "Read contents from OS clipboard", None);
                 Ok::<String, crate::error::AppError>(serde_json::to_string_pretty(&Value::Object(
                     out,