initial commit

.dockerignore

@@ -0,0 +1,3 @@
+node_modules
+npm-debug.log
+sandbox

.gitignore

@@ -0,0 +1,8 @@
+node_modules
+*.log
+*.bin
+.DS_Store
+.venv
+*.mp4
+sandbox
+scripts

.nvmrc

@@ -0,0 +1 @@
+v18.16.0

Dockerfile

@@ -0,0 +1,110 @@
+FROM nvidia/cuda:12.2.0-devel-ubuntu22.04
+    
+LABEL maintainer="Hugging Face"
+
+ARG COLMAP_GIT_COMMIT=main
+ARG CUDA_ARCHITECTURES=native
+ENV QT_XCB_GL_INTEGRATION=xcb_egl
+
+# Prevent stop building ubuntu at time zone selection.  
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN echo "Build started at: $(date "+%Y-%m-%d %H:%M")"
+
+RUN apt-get update
+
+RUN apt-get install -y \
+  wget \
+  curl \
+  git \
+  git-lfs \
+  unzip
+
+RUN git lfs install
+
+# Prepare and empty machine for building.
+RUN apt-get install -y \
+    cmake \
+    ninja-build \
+    build-essential \
+    libboost-program-options-dev \
+    libboost-filesystem-dev \
+    libboost-graph-dev \
+    libboost-system-dev \
+    libeigen3-dev \
+    libflann-dev \
+    libfreeimage-dev \
+    libmetis-dev \
+    libgoogle-glog-dev \
+    libgtest-dev \
+    libsqlite3-dev \
+    libglew-dev \
+    qtbase5-dev \
+    libqt5opengl5-dev \
+    libcgal-dev \
+    libceres-dev
+
+# Build and install COLMAP.
+RUN git clone https://github.com/colmap/colmap.git
+RUN cd colmap && \
+    git fetch https://github.com/colmap/colmap.git ${COLMAP_GIT_COMMIT} && \
+    git checkout FETCH_HEAD && \
+    mkdir build && \
+    cd build && \
+    cmake .. -GNinja -DCMAKE_CUDA_ARCHITECTURES=${CUDA_ARCHITECTURES} && \
+    ninja && \
+    ninja install && \
+    cd .. && rm -rf colmap
+
+# NodeJS - NEW, MORE ANNOYING WAY
+RUN apt --yes install -y ca-certificates gnupg
+RUN mkdir -p /etc/apt/keyrings
+RUN curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
+ENV NODE_MAJOR=18
+RUN echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
+RUN apt update
+RUN apt --yes install nodejs
+
+# Python
+RUN apt --yes install python3 python3-pip
+RUN python3 -m pip install --no-cache-dir --upgrade pip
+
+# Set up a new user named "user" with user ID 1000
+RUN useradd -o -u 1000 user
+
+# Switch to the "user" user
+USER user
+
+ENV PYTHON_BIN /usr/bin/python3
+
+#ENV PATH /usr/local/cuda-12.2/bin:$PATH
+#ENV LD_LIBRARY_PATH /usr/local/cuda-12.2/lib64:$LD_LIBRARY_PATH
+# Let's try to downgrade
+ENV PATH /usr/local/cuda-11.8/bin:$PATH
+ENV LD_LIBRARY_PATH /usr/local/cuda-11.8/lib64:$LD_LIBRARY_PATH
+
+
+# Set home to the user's home directory
+ENV HOME=/home/user \
+	PATH=/home/user/.local/bin:$PATH
+
+# Set the working directory to the user's home directory
+WORKDIR $HOME/app
+
+# Install app dependencies
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY --chown=user package*.json $HOME/app
+
+RUN npm install
+
+# Copy the current directory contents into the container at $HOME/app setting the owner to the user
+COPY --chown=user . $HOME/app
+
+RUN echo "Build ended at: $(date "+%Y-%m-%d %H:%M")"
+
+EXPOSE 7860
+
+# we can't use this (it time out)
+# CMD [ "xvfb-run", "-s", "-ac -screen 0 1920x1080x24", "npm", "run", "start" ]
+CMD [ "npm", "run", "start" ]

LICENSE.txt

@@ -0,0 +1,201 @@
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README.md

@@ -0,0 +1,35 @@
+---
+title: Campose API
+emoji: 📷
+colorFrom: green
+colorTo: yellow
+sdk: docker
+pinned: true
+app_port: 7860
+---
+
+## Presentation
+
+### What is this project?
+
+WARNING - This project is not finished!
+
+Campose API is a REST API to generate camera pose data from a set of images or a video.
+
+### TODO
+
+- [x] Compile colmap with Docker
+- [ ] Support upload of assets
+- [ ] Support download of scenes
+
+## Running on your machine
+
+### Prerequisites
+
+You need a machine with CUDA, a GPU etc
+
+### Environment variables
+
+- `STORAGE_PATH`: on HF use `/data`, on a local you can use `.sandbox/`
+
+### Deployment to Hugging Face

package-lock.json

@@ -0,0 +1,1993 @@
+{
+  "name": "@jbilcke-hf/campose-api",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@jbilcke-hf/campose-api",
+      "version": "1.0.0",
+      "license": "Apache License",
+      "dependencies": {
+        "@gorgonjs/file-provider": "^1.4.1",
+        "@gorgonjs/gorgon": "^1.4.1",
+        "@types/express": "^4.17.17",
+        "@types/uuid": "^9.0.2",
+        "archiver": "^6.0.1",
+        "eventsource-parser": "^1.0.0",
+        "express": "^4.18.2",
+        "express-fileupload": "^1.4.0",
+        "extract-zip": "^2.0.1",
+        "fluent-ffmpeg": "^2.1.2",
+        "fs-extra": "^11.1.1",
+        "node-fetch": "^3.3.1",
+        "resize-base64": "^1.0.12",
+        "sharp": "^0.32.4",
+        "temp-dir": "^3.0.0",
+        "ts-node": "^10.9.1",
+        "uuid": "^9.0.0",
+        "yaml": "^2.3.1"
+      }
+    },
+    "node_modules/@cspotcode/source-map-support": {
+      "version": "0.8.1",
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "0.3.9"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@gorgonjs/file-provider": {
+      "version": "1.5.0",
+      "license": "MIT",
+      "dependencies": {
+        "fast-glob": "^3.3.0"
+      },
+      "peerDependencies": {
+        "@gorgonjs/gorgon": "^1.5.0"
+      }
+    },
+    "node_modules/@gorgonjs/gorgon": {
+      "version": "1.5.0",
+      "license": "MIT"
+    },
+    "node_modules/@jridgewell/resolve-uri": {
+      "version": "3.1.1",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@jridgewell/sourcemap-codec": {
+      "version": "1.4.15",
+      "license": "MIT"
+    },
+    "node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.9",
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.0.3",
+        "@jridgewell/sourcemap-codec": "^1.4.10"
+      }
+    },
+    "node_modules/@nodelib/fs.scandir": {
+      "version": "2.1.5",
+      "license": "MIT",
+      "dependencies": {
+        "@nodelib/fs.stat": "2.0.5",
+        "run-parallel": "^1.1.9"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@nodelib/fs.stat": {
+      "version": "2.0.5",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@nodelib/fs.walk": {
+      "version": "1.2.8",
+      "license": "MIT",
+      "dependencies": {
+        "@nodelib/fs.scandir": "2.1.5",
+        "fastq": "^1.6.0"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@tsconfig/node10": {
+      "version": "1.0.9",
+      "license": "MIT"
+    },
+    "node_modules/@tsconfig/node12": {
+      "version": "1.0.11",
+      "license": "MIT"
+    },
+    "node_modules/@tsconfig/node14": {
+      "version": "1.0.3",
+      "license": "MIT"
+    },
+    "node_modules/@tsconfig/node16": {
+      "version": "1.0.4",
+      "license": "MIT"
+    },
+    "node_modules/@types/body-parser": {
+      "version": "1.19.3",
+      "license": "MIT",
+      "dependencies": {
+        "@types/connect": "*",
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/connect": {
+      "version": "3.4.36",
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/express": {
+      "version": "4.17.17",
+      "license": "MIT",
+      "dependencies": {
+        "@types/body-parser": "*",
+        "@types/express-serve-static-core": "^4.17.33",
+        "@types/qs": "*",
+        "@types/serve-static": "*"
+      }
+    },
+    "node_modules/@types/express-serve-static-core": {
+      "version": "4.17.36",
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*",
+        "@types/qs": "*",
+        "@types/range-parser": "*",
+        "@types/send": "*"
+      }
+    },
+    "node_modules/@types/http-errors": {
+      "version": "2.0.2",
+      "license": "MIT"
+    },
+    "node_modules/@types/mime": {
+      "version": "1.3.2",
+      "license": "MIT"
+    },
+    "node_modules/@types/node": {
+      "version": "20.6.2",
+      "license": "MIT"
+    },
+    "node_modules/@types/qs": {
+      "version": "6.9.8",
+      "license": "MIT"
+    },
+    "node_modules/@types/range-parser": {
+      "version": "1.2.4",
+      "license": "MIT"
+    },
+    "node_modules/@types/send": {
+      "version": "0.17.1",
+      "license": "MIT",
+      "dependencies": {
+        "@types/mime": "^1",
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/serve-static": {
+      "version": "1.15.2",
+      "license": "MIT",
+      "dependencies": {
+        "@types/http-errors": "*",
+        "@types/mime": "*",
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/uuid": {
+      "version": "9.0.4",
+      "license": "MIT"
+    },
+    "node_modules/@types/yauzl": {
+      "version": "2.10.0",
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.8",
+      "license": "MIT",
+      "dependencies": {
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/acorn": {
+      "version": "8.10.0",
+      "license": "MIT",
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/acorn-walk": {
+      "version": "8.2.0",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/archiver": {
+      "version": "6.0.1",
+      "license": "MIT",
+      "dependencies": {
+        "archiver-utils": "^4.0.1",
+        "async": "^3.2.4",
+        "buffer-crc32": "^0.2.1",
+        "readable-stream": "^3.6.0",
+        "readdir-glob": "^1.1.2",
+        "tar-stream": "^3.0.0",
+        "zip-stream": "^5.0.1"
+      },
+      "engines": {
+        "node": ">= 12.0.0"
+      }
+    },
+    "node_modules/archiver-utils": {
+      "version": "4.0.1",
+      "license": "MIT",
+      "dependencies": {
+        "glob": "^8.0.0",
+        "graceful-fs": "^4.2.0",
+        "lazystream": "^1.0.0",
+        "lodash": "^4.17.15",
+        "normalize-path": "^3.0.0",
+        "readable-stream": "^3.6.0"
+      },
+      "engines": {
+        "node": ">= 12.0.0"
+      }
+    },
+    "node_modules/arg": {
+      "version": "4.1.3",
+      "license": "MIT"
+    },
+    "node_modules/array-flatten": {
+      "version": "1.1.1",
+      "license": "MIT"
+    },
+    "node_modules/async": {
+      "version": "3.2.4",
+      "license": "MIT"
+    },
+    "node_modules/b4a": {
+      "version": "1.6.4",
+      "license": "ISC"
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "license": "MIT"
+    },
+    "node_modules/base64-js": {
+      "version": "1.5.1",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/bl": {
+      "version": "4.1.0",
+      "license": "MIT",
+      "dependencies": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      }
+    },
+    "node_modules/bluebird": {
+      "version": "3.7.2",
+      "license": "MIT"
+    },
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+        "node": ">=0.6"
+      }
+    },
+    "node_modules/ts-node": {
+      "version": "10.9.1",
+      "license": "MIT",
+      "dependencies": {
+        "@cspotcode/source-map-support": "^0.8.0",
+        "@tsconfig/node10": "^1.0.7",
+        "@tsconfig/node12": "^1.0.7",
+        "@tsconfig/node14": "^1.0.0",
+        "@tsconfig/node16": "^1.0.2",
+        "acorn": "^8.4.1",
+        "acorn-walk": "^8.1.1",
+        "arg": "^4.1.0",
+        "create-require": "^1.1.0",
+        "diff": "^4.0.1",
+        "make-error": "^1.1.1",
+        "v8-compile-cache-lib": "^3.0.1",
+        "yn": "3.1.1"
+      },
+      "bin": {
+        "ts-node": "dist/bin.js",
+        "ts-node-cwd": "dist/bin-cwd.js",
+        "ts-node-esm": "dist/bin-esm.js",
+        "ts-node-script": "dist/bin-script.js",
+        "ts-node-transpile-only": "dist/bin-transpile.js",
+        "ts-script": "dist/bin-script-deprecated.js"
+      },
+      "peerDependencies": {
+        "@swc/core": ">=1.2.50",
+        "@swc/wasm": ">=1.2.50",
+        "@types/node": "*",
+        "typescript": ">=2.7"
+      },
+      "peerDependenciesMeta": {
+        "@swc/core": {
+          "optional": true
+        },
+        "@swc/wasm": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/tunnel-agent": {
+      "version": "0.6.0",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/type-is": {
+      "version": "1.6.18",
+      "license": "MIT",
+      "dependencies": {
+        "media-typer": "0.3.0",
+        "mime-types": "~2.1.24"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "5.2.2",
+      "license": "Apache-2.0",
+      "peer": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/universalify": {
+      "version": "2.0.0",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 10.0.0"
+      }
+    },
+    "node_modules/unpipe": {
+      "version": "1.0.0",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/util-deprecate": {
+      "version": "1.0.2",
+      "license": "MIT"
+    },
+    "node_modules/utils-merge": {
+      "version": "1.0.1",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.4.0"
+      }
+    },
+    "node_modules/uuid": {
+      "version": "9.0.1",
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
+    "node_modules/v8-compile-cache-lib": {
+      "version": "3.0.1",
+      "license": "MIT"
+    },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/web-streams-polyfill": {
+      "version": "3.2.1",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/which": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
+      "dependencies": {
+        "isexe": "^2.0.0"
+      },
+      "bin": {
+        "which": "bin/which"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "license": "ISC"
+    },
+    "node_modules/yallist": {
+      "version": "4.0.0",
+      "license": "ISC"
+    },
+    "node_modules/yaml": {
+      "version": "2.3.2",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 14"
+      }
+    },
+    "node_modules/yauzl": {
+      "version": "2.10.0",
+      "license": "MIT",
+      "dependencies": {
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
+      }
+    },
+    "node_modules/yn": {
+      "version": "3.1.1",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/zip-stream": {
+      "version": "5.0.1",
+      "license": "MIT",
+      "dependencies": {
+        "archiver-utils": "^4.0.1",
+        "compress-commons": "^5.0.1",
+        "readable-stream": "^3.6.0"
+      },
+      "engines": {
+        "node": ">= 12.0.0"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,34 @@
+{
+  "name": "@jbilcke-hf/campose-api",
+  "version": "1.0.0",
+  "description": "Generate camera pose data from a set of images or a video.",
+  "main": "src/index.mts",
+  "scripts": {
+    "start": "node --loader ts-node/esm src/index.mts",
+    "docker": "npm run docker:build && npm run docker:run",
+    "docker:build": "docker build -t campose-api .",
+    "docker:run": "docker run -it -p 7860:7860 campose-api"
+  },
+  "author": "Julian Bilcke <[email protected]>",
+  "license": "Apache License",
+  "dependencies": {
+    "@gorgonjs/file-provider": "^1.4.1",
+    "@gorgonjs/gorgon": "^1.4.1",
+    "@types/express": "^4.17.17",
+    "@types/uuid": "^9.0.2",
+    "archiver": "^6.0.1",
+    "eventsource-parser": "^1.0.0",
+    "express": "^4.18.2",
+    "express-fileupload": "^1.4.0",
+    "extract-zip": "^2.0.1",
+    "fluent-ffmpeg": "^2.1.2",
+    "fs-extra": "^11.1.1",
+    "node-fetch": "^3.3.1",
+    "resize-base64": "^1.0.12",
+    "sharp": "^0.32.4",
+    "temp-dir": "^3.0.0",
+    "ts-node": "^10.9.1",
+    "uuid": "^9.0.0",
+    "yaml": "^2.3.1"
+  }
+}

src/colmap.mts

@@ -0,0 +1,81 @@
+import { exec } from "child_process"
+
+/**
+ * Interface for the options for the `runColmap` function.
+ * See: https://colmap.github.io/cli.html
+ */
+export interface ColmapOptions {
+  /**
+   * The command to run (one of the available commands in COLMAP).
+   */
+  command: string;
+
+  /**
+   * The path to your project, which must contain a folder "images" with all the images.
+   */
+  projectPath?: string;
+
+  /**
+   * The workspace path for the project (used in some commands).
+   */
+  workspacePath?: string;
+
+  /**
+   * The image path for the project (used in some commands).
+   */
+  imagePath?: string;
+
+  /**
+   * The database path for the project (used in some commands).
+   */
+  databasePath?: string;
+
+  /**
+   * The output path for the project (used in some commands).
+   */
+  outputPath?: string;
+
+  /**
+   * Additional parameters that should be passed to the command.
+   */
+  parameters?: { [key: string]: any };
+
+  /**
+   * If set, forces the program to use CPU-based feature extraction and matching.
+   */
+  useCPU?: boolean;
+}
+
+/**
+ * Run COLMAP commands from NodeJS programmatically.
+ *
+ * @param {ColmapOptions} options A set of configurations to be passed to the application.
+ */
+export const runColmap = (options: ColmapOptions): Promise<string> => {
+  return new Promise((resolve, reject) => {
+    let command = `colmap ${options.command}`;
+
+    if (options.projectPath) command += ` --project_path ${options.projectPath}`;
+    if (options.workspacePath) command += ` --workspace_path ${options.workspacePath}`;
+    if (options.imagePath) command += ` --image_path ${options.imagePath}`;
+    if (options.databasePath) command += ` --database_path ${options.databasePath}`;
+    if (options.outputPath) command += ` --output_path ${options.outputPath}`;
+
+    // Loop through additional parameters (if any) and add them to the command.
+    if (options.parameters) {
+      for (let key of Object.keys(options.parameters)) {
+        command += ` --${key} ${options.parameters[key]}`;
+      }
+    }
+
+    if (options.useCPU) command += ` --SiftExtraction.use_gpu 0 --SiftMatching.use_gpu 0`;
+
+    exec(command, (error, stdout, stderr) => {
+      if (error) {
+        reject(stderr);
+      } else {
+        resolve(stdout);
+      }
+    });
+  });
+};

src/config.mts

@@ -0,0 +1,9 @@
+import path from "node:path"
+
+export const storagePath = `${process.env.STORAGE_PATH || './sandbox'}`
+
+export const inputsDirFilePath = path.join(storagePath, "training_inputs")
+export const outputsDirFilePath = path.join(storagePath, "training_outputs")
+
+export const shotFormatVersion = 1
+export const sequenceFormatVersion = 1

src/index.mts

@@ -0,0 +1,103 @@
+import express from "express"
+import fileUpload from "express-fileupload"
+import path from "path"
+import os from "os"
+import fs from "fs"
+import archiver from "archiver"
+import ffmpeg from "fluent-ffmpeg"
+
+// import { initFolders } from "./initFolders.mts"
+import { runColmap, ColmapOptions } from "./colmap.mts"
+
+// initFolders()
+
+declare module 'express-serve-static-core' {
+  interface Request {
+    files: any;
+  }
+}
+
+const app = express()
+const port = 7860
+
+const maxActiveRequests = 4
+let activeRequests = 0
+
+app.use(express.json({limit: '50mb'}))
+app.use(express.urlencoded({limit: '50mb', extended: true}))
+app.use(fileUpload())
+
+app.post("/", async (req, res) => {
+  if (activeRequests >= maxActiveRequests) {
+    res.status(503).json({message: "Service Unavailable: Max concurrent requests reached. Please try again later"}).end();
+    return
+  }
+  activeRequests++
+  
+  if (!req.files || !req.files.data || req.files.data.mimetype !== 'video/mp4') {
+    res.status(400).json({error: "Missing or invalid data file in request"}).end()
+    return
+  }
+
+  let options: ColmapOptions = req.body 
+  let dataFile: fileUpload.UploadedFile = req.files.data
+
+  let projectTempDir = path.join(os.tmpdir(), Math.random().toString().slice(2))
+  let outputTempDir = path.join(os.tmpdir(), Math.random().toString().slice(2))
+
+  try {
+    fs.mkdirSync(projectTempDir) 
+    fs.mkdirSync(outputTempDir) 
+
+    await dataFile.mv(path.join(projectTempDir, dataFile.name)) 
+
+    let imageFolder = path.join(projectTempDir, 'images');
+    fs.mkdirSync(imageFolder)
+
+    await new Promise((resolve, reject) => {
+      ffmpeg(path.join(projectTempDir, dataFile.name))
+        .outputOptions('-vf', 'fps=1') // Change this value depending on the number of frames you want from video.
+        .output(path.join(imageFolder, 'image-%03d.png'))
+        .on('end', resolve)
+        .on('error', reject)
+        .run()
+    })
+
+    options.projectPath = projectTempDir 
+    options.workspacePath = projectTempDir 
+    options.imagePath = imageFolder
+
+    const result = await runColmap(options)
+
+    let outputFilePath = path.join(outputTempDir, 'output.zip')
+    let output = fs.createWriteStream(outputFilePath)
+    let archive = archiver('zip')
+
+    archive.directory(outputTempDir, false)
+    archive.pipe(output)
+    await archive.finalize()
+
+    res.status(200)
+    res.download(outputFilePath, 'output.zip', (error) => {
+      if (!error) fs.rmSync(projectTempDir, {recursive: true, force: true}) 
+      fs.rmSync(outputTempDir, {recursive: true, force: true})
+    })
+  } catch (error) {
+    res.status(500).json({
+      error: "Couldn't generate pose data",
+      message: error
+    }).end()
+  } finally {
+    activeRequests--
+  }
+});
+
+app.get("/", async (req, res) => {
+  res.status(200)
+  res.write(`<html><head></head><body>
+Campose API is a micro-service used to generate came pose data from a set of images.
+    </body></html>`)
+  res.end()
+})
+
+app.listen(port, () => { console.log(`Open http://localhost:${port}`) })

src/initFolders.mts

@@ -0,0 +1,11 @@
+import {
+  inputsDirFilePath,
+  outputsDirFilePath,
+} from "./config.mts"
+import { createDirIfNeeded } from "./utils/createDirIfNeeded.mts"
+
+export const initFolders = () => {
+  console.log(`initializing folders..`)
+  createDirIfNeeded(inputsDirFilePath)
+  createDirIfNeeded(outputsDirFilePath)
+}

src/types.mts

@@ -0,0 +1,35 @@
+
+export type PostVisibility =
+  | "featured" // featured by admins
+  | "trending" // top trending / received more than 10 upvotes
+  | "normal" // default visibility
+
+export type Post = {
+  postId: string
+  appId: string
+  prompt: string
+  previewUrl: string
+  assetUrl: string
+  createdAt: string
+  visibility: PostVisibility
+  upvotes: number
+  downvotes: number
+}
+
+export type CreatePostResponse = {
+  success?: boolean
+  error?: string
+  post: Post
+}
+
+export type GetAppPostsResponse = {
+  success?: boolean
+  error?: string
+  posts: Post[]
+}
+
+export type GetAppPostResponse = {
+  success?: boolean
+  error?: string
+  post: Post
+}

src/utils/createDirIfNeeded.mts

@@ -0,0 +1,7 @@
+import { existsSync, mkdirSync } from "node:fs"
+
+export const createDirIfNeeded = (dirPath: string) => {
+  if (!existsSync(dirPath)) {
+    mkdirSync(dirPath, { recursive: true })
+  }
+}

src/utils/debouncePromise.mts

@@ -0,0 +1,66 @@
+/*
+
+Here's how you can use the `debouncePromise` function:
+
+```typescript
+async function fetchData(query: string): Promise<string> {
+  // Simulating an API call
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      resolve(`Results for ${query}`);
+    }, 500);
+  });
+}
+
+const debouncedFetchData = debouncePromise(fetchData, 300);
+
+(async () => {
+  try {
+    console.log(await debouncedFetchData("query 1")); // This will be ignored
+    console.log(await debouncedFetchData("query 2")); // This will be ignored
+    console.log(await debouncedFetchData("query 3")); // This will return "Results for query 3"
+  } catch (error) {
+    console.error(error);
+  }
+})();
+```
+
+The `debouncePromise` function takes a Promise-based function `func` and a `wait` time as its arguments.
+It returns a debounced version of the given function that, when called multiple times within the specified wait time, will only execute the last call.
+*/
+
+type DebouncedFunction<T extends any[], R> = ((...args: T) => R) & {
+  clear: () => void
+}
+
+export function debouncePromise<T extends any[], R>(
+  func: (...args: T) => Promise<R>,
+  wait: number
+): DebouncedFunction<T, Promise<R | undefined>> {
+  let timeout: NodeJS.Timeout | undefined
+
+  const debounced = (...args: T) => {
+    return new Promise<R | undefined>((resolve, reject) => {
+      if (timeout) {
+        clearTimeout(timeout)
+      }
+
+      timeout = setTimeout(async () => {
+        try {
+          const result = await func(...args)
+          resolve(result)
+        } catch (error) {
+          reject(error)
+        }
+      }, wait)
+    })
+  }
+
+  debounced.clear = () => {
+    if (timeout) {
+      clearTimeout(timeout)
+    }
+  }
+
+  return debounced
+}

src/utils/debounceSync.mts

@@ -0,0 +1,59 @@
+type DebouncedFunctionSync<T extends any[], R> = ((...args: T) => R) & {
+  clear: () => void
+}
+
+/**
+ * Example usage:
+ * ```typescript
+ *   function fetchDataSync(query: string): string {
+ *     return `Results for ${query}`;
+ *   }
+ *
+ *   const debouncedFetchDataSync = debounceSync(fetchDataSync, 300);
+ *
+ *   try {
+ *    console.log(debouncedFetchDataSync("query 1")); // This will be ignored
+ *     console.log(debouncedFetchDataSync("query 2")); // This will be ignored
+ *     console.log(debouncedFetchDataSync("query 3")); // This will return "Results for query 3"
+ *   } catch (error) {
+ *     console.error(error);
+ *   }
+ * ```
+ *
+ * Note that the synchronous version of the debounce function will return
+ * the result of the last function call or `undefined` if the function was
+ * not called within the specified wait time. You should also be aware that
+ * this synchronous version may cause blocking if the debounced function
+ * takes a long time to execute.
+ *
+ * @param func
+ * @param wait
+ * @returns
+ */
+export function debounceSync<T extends any[], R>(
+  func: (...args: T) => R,
+  wait: number
+): DebouncedFunctionSync<T, R | undefined> {
+  let timeout: NodeJS.Timeout | undefined
+
+  const debounced = (...args: T): R | undefined => {
+    if (timeout) {
+      clearTimeout(timeout)
+    }
+
+    let result: R | undefined
+    timeout = setTimeout(() => {
+      result = func(...args)
+    }, wait)
+
+    return result
+  }
+
+  debounced.clear = () => {
+    if (timeout) {
+      clearTimeout(timeout)
+    }
+  }
+
+  return debounced
+}

src/utils/deleteAllFilesWith.mts

@@ -0,0 +1,15 @@
+import { promises as fs } from "node:fs"
+import path from "node:path"
+
+export const deleteFilesWithName = async (dir: string, name: string) => {
+  for (const file of await fs.readdir(dir)) {
+    if (file.includes(name)) {
+      const filePath = path.join(dir, file)
+      try {
+        await fs.unlink(filePath)
+      } catch (err) {
+        console.error(`failed to unlink file in ${filePath}: ${err}`)
+      }
+    }
+  }
+}

src/utils/deleteFileIfExists.mts

@@ -0,0 +1,18 @@
+import { existsSync, promises as fs } from "node:fs"
+
+export const deleteFileIfExists = async (filePath: string) => {
+  // this function scares me a bit, 
+  if (filePath === "/" || filePath === "~" || filePath === ".") {
+    throw new Error(`lol, no.`)
+  }
+
+  if (existsSync(filePath)) {
+    try {
+      await fs.unlink(filePath)
+      return true
+    } catch (err) {
+      console.log(`failed to delete file ${filePath}`)
+    }
+  }
+  return false
+}

src/utils/downloadFileAsBase64.mts

@@ -0,0 +1,17 @@
+export const downloadImageAsBase64 = async (remoteUrl: string): Promise<string> => {
+  const controller = new AbortController()
+
+  // download the image
+  const response = await fetch(remoteUrl, {
+    signal: controller.signal
+  })
+
+  // get as Buffer
+  const arrayBuffer = await response.arrayBuffer()
+  const buffer = Buffer.from(arrayBuffer)
+
+  // convert it to base64
+  const base64 = buffer.toString('base64')
+
+  return base64
+};

src/utils/downloadFileToTmp.mts

@@ -0,0 +1,29 @@
+import path from "node:path"
+import fs from "node:fs"
+
+import tmpDir from "temp-dir"
+
+export const downloadFileToTmp = async (remoteUrl: string, fileName: string) => {
+
+  const filePath = path.resolve(tmpDir, fileName)
+
+  const controller = new AbortController()
+  const timeoutId = setTimeout(() => controller.abort(), 15 * 60 * 60 * 1000) // 15 minutes
+
+  // TODO finish the timeout?
+
+  // download the file
+  const response = await fetch(remoteUrl, {
+    signal: controller.signal
+  })
+
+  // write it to the disk
+  const arrayBuffer = await response.arrayBuffer()
+
+  await fs.promises.writeFile(
+    filePath,
+    Buffer.from(arrayBuffer)
+  )
+
+  return filePath
+}

src/utils/getValidBoolean.mts

@@ -0,0 +1,9 @@
+export const getValidBoolean = (something: any, defaultValue: boolean) => {
+  if (typeof something === "boolean") {
+    return something
+  }
+
+  const strValue = `${something || defaultValue}`.toLowerCase()
+  
+  return strValue === "true" || strValue === "1" || strValue === "on"
+}

src/utils/getValidNumber.mts

@@ -0,0 +1,10 @@
+export const getValidNumber = (something: any, minValue: number, maxValue: number, defaultValue: number) => {
+  const strValue = `${something || defaultValue}`
+  const numValue = Number(strValue)
+  const isValid = !isNaN(numValue) && isFinite(numValue)
+  if (!isValid) {
+    return defaultValue
+  }
+  return Math.max(minValue, Math.min(maxValue, numValue))
+ 
+}

src/utils/getValidResolution.mts

@@ -0,0 +1,16 @@
+import { getValidNumber } from "./getValidNumber.mts"
+
+export const getValidResolution = (something: any) => {
+  const strValue = `${something || ''}`
+  const chunks = strValue.split('x')
+
+  if (chunks.length !== 2) {
+    return `1280x720`
+  }
+
+  const [widthStr, heightStr] = chunks
+  const width = getValidNumber(widthStr, 256, 1280, 1280)
+  const height = getValidNumber(widthStr, 256, 720, 720)
+
+  return `${width}x${height}`
+}

src/utils/hasValidAuthorization.mts

@@ -0,0 +1,10 @@
+import { IncomingHttpHeaders } from "node:http"
+
+export const hasValidAuthorization = (headers: IncomingHttpHeaders) => {
+  const [_, token] = `${headers.authorization || ""}`.split(" ")
+  if (typeof token === "string" && token.trim() === process.env.SECRET_ACCESS_TOKEN.trim()) {
+    return true
+  }
+
+  return false
+}

src/utils/hashRequest.mts

@@ -0,0 +1,24 @@
+import { RenderRequest } from "../types.mts"
+import { computeSha256 } from "./computeSha256.mts"
+
+export function hashRequest(request: RenderRequest) {
+
+  // we ignore the commands associated to cache and stuff
+  const hashable = {
+    version: 1,
+    prompt: request.prompt,
+    segmentation: request.segmentation,
+    actionnables: request.actionnables,
+    nbFrames: request.nbFrames,
+    nbSteps: request.nbSteps,
+    // seed: request.seed,
+    width: request.width,
+    height: request.height,
+    projection: request.projection,
+  }
+
+  const requestJson = JSON.stringify(hashable)
+  const hash = computeSha256(requestJson)
+
+  return hash
+}

src/utils/moveFile.mts

@@ -0,0 +1,15 @@
+import { promises as fs } from "node:fs"
+
+// a function to move a file
+// this implementation is safe to use on a Hugging Face Space
+// for instance when copying from one disk to another
+// (we cannot use fs.rename in that case)
+export const moveFile = async (sourceFilePath: string, targetFilePath: string) => {
+  await fs.copyFile(sourceFilePath, targetFilePath)
+  console.log(`moved file from ${sourceFilePath} to ${targetFilePath}`)
+  try {
+    await fs.unlink(sourceFilePath)
+  } catch (err) {
+    console.log("moveFile: failed to cleanup (no big deal..)")
+  }
+}

src/utils/randomShuffle.mts

@@ -0,0 +1,8 @@
+export function randomShuffle<T>(array: T[]): T[] { 
+  for (let i = array.length - 1; i > 0; i--) { 
+    const j = Math.floor(Math.random() * (i + 1));
+    [array[i], array[j]] = [array[j], array[i]];
+  } 
+
+  return array
+}; 

src/utils/sleep.mts

@@ -0,0 +1,6 @@
+export const sleep = async (durationInMs: number) =>
+  new Promise((resolve) => {
+    setTimeout(() => {
+      resolve(true)
+    }, durationInMs)
+  })

tsconfig.json

@@ -0,0 +1,12 @@
+{
+   "compilerOptions": {
+    "allowJs": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "module": "nodenext",
+    "noEmit": true,
+    "allowImportingTsExtensions": true,
+    "target": "es2022"
+  },
+  "include": ["**/*.ts", "**/*.mts"],
+}