tencent cloud

Overview

This document provides an overview of APIs and SDK code samples related to COS blind watermarking.

SDK API References

For the parameters and method descriptions of all the APIs in the SDK, see SDK API Reference.

Adding Blind Watermarks

Description

COS allows you to add a blind watermark when uploading or downloading an object.

Sample 1. Adding a blind watermark when uploading

List<PicOperationRule> rules = new LinkedList<>();
// Add a rule for blind watermarking, and the processed image will be saved in the bucket with a location identifier in the format:
// examplewatermarkobject
rules.add(new PicOperationRule("examplewatermarkobject",
       "watermark/3/type/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAw"));
PicOperations picOperations = new PicOperations(true, rules);
PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, srcPath);
putObjectRequest.setPicOperations(picOperations);
// If the upload is successful, you will get 2 images: the original and the processed images
COSXMLUploadTask cosxmlUploadTask = transferManager.upload(putObjectRequest, uploadId);

Note：

For more samples, please visit GitHub.

Sample 2. Adding a blind watermark when downloading

GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, cosPath, savePathDir, savedFileName);
// Add a text watermark
getObjectRequest.addQuery("watermark/3/type/3/text/dGVuY2VudCBjbG91ZA==", null);
COSXMLDownloadTask cosxmlDownloadTask =
       transferManager.download(applicationContext, getObjectRequest);

Note：

For more samples, please visit GitHub.