Added EfficientSAM Wasm demo

.gitmodules

@@ -11,3 +11,7 @@
 [submodule "mv2/wasm/executorch"]
 	path = mv2/wasm/executorch
 	url = https://github.com/pytorch/executorch.git
+
+[submodule "efficient_sam/wasm/executorch"]
+	path = efficient_sam/wasm/executorch
+	url = https://github.com/pytorch/executorch.git

efficient_sam/wasm/CMakeLists.txt

@@ -0,0 +1,36 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates. All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the LICENSE
+# file in the root directory of this source tree.
+
+# Please this file formatted by running:
+# ~~~
+# cmake-format -i CMakeLists.txt
+# ~~~
+
+add_subdirectory("executorch")
+
+add_executable(executorch_wasm_demo_lib)
+target_link_libraries(executorch_wasm_demo_lib PRIVATE executorch_wasm
+                                                       executorch_backends)
+target_link_options(executorch_wasm_demo_lib PRIVATE -sALLOW_MEMORY_GROWTH
+                    -sSTACK_SIZE=262144 -sENVIRONMENT=web)
+
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/demo.js
+  COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/demo.js
+          ${CMAKE_CURRENT_BINARY_DIR}/demo.js
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/demo.js
+  COMMENT "Copying demo.js to build output directory")
+
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/demo.html
+  COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/demo.html
+          ${CMAKE_CURRENT_BINARY_DIR}/demo.html
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/demo.html
+  COMMENT "Copying demo.html to build output directory")
+
+add_custom_target(
+  executorch_wasm_demo
+  DEPENDS executorch_wasm_demo_lib ${CMAKE_CURRENT_BINARY_DIR}/demo.js
+          ${CMAKE_CURRENT_BINARY_DIR}/demo.html)

efficient_sam/wasm/README.md

@@ -0,0 +1,69 @@
+# ExecuTorch JavaScript Bindings Demo
+
+This demo showcases the capabilities of ExecuTorch's JavaScript bindings. It is able to load a model, run inference, and classify an image natively in the browser.
+
+## Installing Emscripten
+
+[Emscripten](https://emscripten.org/index.html) is necessary to compile ExecuTorch for Wasm. You can install Emscripten with these commands:
+
+```bash
+# Clone the emsdk repository
+git clone https://github.com/emscripten-core/emsdk.git
+cd emsdk
+
+# Download and install version 4.0.10 of the SDK
+./emsdk install 4.0.10
+./emsdk activate 4.0.10
+
+# Add the Emscripten environment variables to your shell
+source ./emsdk_env.sh
+```
+
+## Setting up ExecuTorch and Generating the Model File
+
+Make sure you have the system requirements listed in the [Getting Started Guide](https://docs.pytorch.org/executorch/main/getting-started.html#system-requirements) before continuing.
+
+1. Install ExecuTorch from PyPI.
+```bash
+pip3 install executorch
+```
+
+2. Update the ExecuTorch submodule.
+```bash
+git submodule update --init --recursive executorch
+```
+
+3. Using the script `examples/portable/scripts/export.py` generate the EfficientSAM binary file for this demo.
+
+```bash
+cd executorch # To the root of the executorch repo
+
+# Export the model file for the demo
+python3 -m examples.portable.scripts.export --model_name="efficient_sam"
+```
+
+## Building and Running
+
+Once you have Emscripten installed, ExecuTorch set up, and the model file generated, you can build and run the demo. Building may take up to 9 minutes.
+
+```bash
+cd efficient_sam/wasm # The directory containing this README
+
+# Build the demo
+bash build.sh
+
+# Run the demo
+python3 -m http.server --directory build/
+```
+
+The page will be available at http://localhost:8000/demo.html.
+
+## Demo Features
+
+- Load a model from a file
+  - This demo only supports the EfficientSAM model. Passing in a model with different input/output shapes will result in an error.
+- Run inference on an image
+  - Supported formats: `.png`, `.gif`, `.jpeg`, `.jpg`
+- Select a point on the image to run inference
+  - May take up to 40 seconds to run inference
+- Show and hide the segmentation mask

efficient_sam/wasm/build.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+CMAKE_OUT=build
+
+emcmake cmake . -DEXECUTORCH_BUILD_WASM=ON \
+    -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
+    -DEXECUTORCH_BUILD_EXTENSION_FLAT_TENSOR=ON \
+    -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
+    -DEXECUTORCH_BUILD_EXTENSION_TENSOR=ON \
+    -DEXECUTORCH_BUILD_KERNELS_OPTIMIZED=ON \
+    -DCMAKE_BUILD_TYPE=Release \
+    -B"${CMAKE_OUT}"
+
+if [ "$(uname)" == "Darwin" ]; then
+    CMAKE_JOBS=$(( $(sysctl -n hw.ncpu) - 1 ))
+else
+    CMAKE_JOBS=$(( $(nproc) - 1 ))
+fi
+
+cmake --build ${CMAKE_OUT} --target executorch_wasm_demo -j ${CMAKE_JOBS}

efficient_sam/wasm/demo.html

@@ -0,0 +1,28 @@
+<!--
+  Copyright (c) Meta Platforms, Inc. and affiliates.
+  All rights reserved.
+  This source code is licensed under the BSD-style license found in the
+  LICENSE file in the root directory of this source tree.
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8" />
+    <title>Executorch Wasm Demo</title>
+</head>
+<body>
+    <button type="button" id="upload_model_button">Upload pte file</button>
+    <button disabled type="button" id="upload_image_button">Upload image file</button>
+    <button disabled type="button" id="inference_button">Run model</button>
+    <button disabled type="button" id="mask_button">Show mask</button>
+    <p id="model_text">No model uploaded</p>
+    <div id="canvas-container" style="position: relative;">
+        <canvas id="canvas" width="1024" height="1024" style="position: absolute; left: 0; top: 0; z-index: 0;"></canvas>
+        <canvas id="mask_canvas" width="1024" height="1024" style="position: absolute; left: 0; top: 0; z-index: 1;"></canvas>
+        <canvas id="pointer_canvas" width="1024" height="1024" style="position: absolute; left: 0; top: 0; z-index: 2;"></canvas>
+    </div>
+    <script src="demo.js"></script>
+    <script src="executorch_wasm_demo_lib.js"></script>
+</body>
+</html>