commit aca23f23263bebc86dec4ab22edcc54b83959a74 Author: CancerAi Date: Mon Sep 28 21:56:04 2026 +0800 init: 完成了图片加水印 diff --git a/backend-bridge/.gitignore b/backend-bridge/.gitignore new file mode 100644 index 0000000..3a59d75 --- /dev/null +++ b/backend-bridge/.gitignore @@ -0,0 +1,2 @@ +.idea/ +.venv/ diff --git a/backend-bridge/README.md b/backend-bridge/README.md new file mode 100644 index 0000000..86daf4e --- /dev/null +++ b/backend-bridge/README.md @@ -0,0 +1,3 @@ +# 简介 +这个后端用来直接桥接TrustMark，不做过多的请求参数校验，仅仅监听localhost，端口为8081 +前端不能直接请求这个服务，应当请求 ../backend 项目下的后端服务 diff --git a/backend-bridge/main.py b/backend-bridge/main.py new file mode 100644 index 0000000..f39075a --- /dev/null +++ b/backend-bridge/main.py @@ -0,0 +1,64 @@ +from fastapi import FastAPI, UploadFile, File, Form, HTTPException, APIRouter +from fastapi.responses import Response +from starlette.responses import JSONResponse +from trustmark import TrustMark +from PIL import Image +import io + +tm = TrustMark(model_type="Q", verbose=False) +appTmp = FastAPI(title="TrustMark Encode API", version="1.0") +app = APIRouter(prefix="/watermark") + +@app.post("/encode") +async def encode_watermark( + image: UploadFile = File(...), + payload: str = Form(...), + outputType: str = Form(...), + strength: float = Form(1.2) +): + """ + 给图片嵌入TrustMark盲水印 + :param image: 原图文件上传 + :param payload: 最多8个ASCII字符 + :param outputType: 输出类型，必须是png，jpg，jpeg + :param strength: 取值一般0.0~1.5 + :return: 带水印图片二进制 + """ + img_bytes = await image.read() + img = Image.open(io.BytesIO(img_bytes)).convert("RGB") + watermarked_img = tm.encode(img, payload, WM_STRENGTH=strength) + buf = io.BytesIO() + watermarked_img.save(buf, format=outputType, quality=90) + buf.seek(0) + return Response( + content=buf.read(), + media_type=f"image/{outputType}" + ) + +@app.post("/decode", summary="上传图片提取TrustMark盲水印") +async def extract_watermark(image: UploadFile = File(...)): + MAX_FILE_SIZE = 10 * 1024 * 1024 + if image.size and image.size > MAX_FILE_SIZE: + raise HTTPException(status_code=413, detail="文件过大，最大支持10MB") + allowed_types = ["image/png", "image/jpeg", "image/jpg"] + if image.content_type not in allowed_types: + raise HTTPException(status_code=400, detail="仅支持 png / jpg 图片") + + try: + img_bytes = await image.read() + img = Image.open(io.BytesIO(img_bytes)).convert("RGB") + payload, has_watermark, schema = tm.decode(img) + + return JSONResponse({ + "success": True, + "has_watermark": has_watermark, + "payload": payload if has_watermark else None, + "schema": schema if has_watermark else None + }) + + except Exception as e: + raise HTTPException(status_code=500, detail=f"解析失败: {str(e)}") + +if __name__ == "__main__": + import uvicorn + uvicorn.run("main:app", host="localhost", port=8081, workers=1) diff --git a/backend-bridge/requirements.txt b/backend-bridge/requirements.txt new file mode 100644 index 0000000..ed50990 --- /dev/null +++ b/backend-bridge/requirements.txt @@ -0,0 +1,8 @@ +fastapi==0.112.2 +uvicorn[standard]==0.30.1 +python-multipart==0.0.20 +pillow==10.4.0 +trustmark==0.9.2 + +starlette +starlette \ No newline at end of file diff --git a/backend/.gitignore b/backend/.gitignore new file mode 100644 index 0000000..a14702c --- /dev/null +++ b/backend/.gitignore @@ -0,0 +1,34 @@ +# dependencies (bun install) +node_modules + +# output +out +dist +*.tgz + +# code coverage +coverage +*.lcov + +# logs +logs +_.log +report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json + +# dotenv environment variable files +.env +.env.development.local +.env.test.local +.env.production.local +.env.local + +# caches +.eslintcache +.cache +*.tsbuildinfo + +# IntelliJ based IDEs +.idea + +# Finder (MacOS) folder config +.DS_Store diff --git a/backend/README.md b/backend/README.md new file mode 100644 index 0000000..d66face --- /dev/null +++ b/backend/README.md @@ -0,0 +1,15 @@ +# hono + +To install dependencies: + +```bash +bun install +``` + +To run: + +```bash +bun run index.ts +``` + +This project was created using `bun init` in bun v1.4.2. 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a/backend/package.json b/backend/package.json new file mode 100644 index 0000000..30636c2 --- /dev/null +++ b/backend/package.json @@ -0,0 +1,19 @@ +{ + "name": "hono", + "module": "index.ts", + "devDependencies": { + "@types/bun": "latest" + }, + "peerDependencies": { + "typescript": "^7" + }, + "private": true, + "scripts": { + "dev": "bun run --hot ./src/index.ts" + }, + "type": "module", + "dependencies": { + "@contentauth/c2pa-node": "^0.9.8", + "hono": "^4.13.10" + } +} diff --git a/backend/src/index.ts b/backend/src/index.ts new file mode 100644 index 0000000..d6227d0 --- /dev/null +++ b/backend/src/index.ts @@ -0,0 +1,136 @@ +import { pathToFileURL } from "bun"; +import { Hono } from "hono"; +import { onlySSG } from "hono/ssg"; +import { validator } from "hono/validator"; +import { isQuestionOrPlusOrMinusToken } from "typescript/unstable/ast"; +import { Signature } from "typescript/unstable/sync"; + +const appTmp = new Hono() +const app = appTmp.basePath("/watermark") + +/** + * param: image: 图片大小必须<=10MB + * param: payload: 必须是长度<=8的字母大小写或数字组合 + * param: strength: 取值>=0,一般取值0~1.5 + * param: outputType: 输出的文件类型，只允许 jpeg | png + */ +app.post("/encode", + validator("form", (val, c) => { + const image = val.image + const payload = val.payload + const strength = val.strength + const outputType = val.outputType + if ( + image == undefined || + payload == undefined || + strength == undefined || + outputType == undefined + ) { + c.status(400) + return c.json({ + code: 400, + msg: "Paarameter is invalid" + }) + } + + if ((image as File).size == 0) { + c.status(400) + return c.json({ + code: 400, + msg: "Image is empty" + }) + } + + const MAX_IMAGE_SIZE = 10 * 1024 * 1024 + if ((image as File).size > MAX_IMAGE_SIZE) { + c.status(400) + return c.json({ + code: 400, + msg: "Image size is too large, must<=10MB" + }) + } + + + if ((payload as string).length > 8 || (payload as string).length <= 0) { + c.status(400) + return c.json({ + code: 400, + msg: "Parameter[payload] length must > 0 and <= 8" + }) + } + + if (!/^[a-zA-Z0-9]+$/.test(payload as string)) { + c.status(400) + return c.json({ + code: 400, + msg: "Parameter[payload] must be an ASCII string" + }) + } + + + if (isNaN(Number(strength))) { + c.status(400) + return c.json({ + code: 400, + msg: "Parameter[strength] must be a number" + }) + } + + const tmpStrength = Number(strength) + if (tmpStrength < 0 || tmpStrength > 100) { + c.status(400) + return c.json({ + code: 400, + msg: "Parameter[strength] must >= 0 and <= 100" + }) + } + + if ( + !((outputType as string) == "jpeg" || + (outputType as string) == "png") + ) { + c.status(400) + return c.json({ + code: 400, + msg: "Parameter[outputType] only support jpeg and png" + }) + } + + return val + }), + async (c) => { + const formData = await c.req.formData() + const image: File = formData.get("image") as File + const payload: string = formData.get("payload") as string + const strength: number = Number(formData.get("strength")) + const outputType: string = formData.get("outputType") as string + + const data = new FormData() + data.append("image", image) + data.append("payload", payload) + data.append("strength", strength.toString()) + data.append("outputType", outputType) + let canFetch: boolean = true + const response = await fetch("http://localhost:8081/watermark/encode", { + method: "POST", + body: data + }).catch((e) => { + canFetch = false + }) + + if (!canFetch) { + c.status(500) + return c.json({ + code: 500, + msg: "Cannot fetch http://localhost:8081/watermark/encode" + }) + } + + const resImage = await response!.blob() + return c.body(resImage) + }) + +export default { + port: 8080, + fetch: app.fetch +} \ No newline at end of file diff --git a/backend/tsconfig.json b/backend/tsconfig.json new file mode 100644 index 0000000..b2e7497 --- /dev/null +++ b/backend/tsconfig.json @@ -0,0 +1,30 @@ +{ + "compilerOptions": { + // Environment setup & latest features + "lib": ["ESNext"], + "target": "ESNext", + "module": "Preserve", + "moduleDetection": "force", + "jsx": "react-jsx", + "allowJs": true, + "types": ["bun"], + + // Bundler mode + "moduleResolution": "bundler", + "allowImportingTsExtensions": true, + "verbatimModuleSyntax": true, + "noEmit": true, + + // Best practices + "strict": true, + "skipLibCheck": true, + "noFallthroughCasesInSwitch": true, + "noUncheckedIndexedAccess": true, + "noImplicitOverride": true, + + // Some stricter flags (disabled by default) + "noUnusedLocals": false, + "noUnusedParameters": false, + "noPropertyAccessFromIndexSignature": false + } +}