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https://github.com/xiaoqidun/ofdgo.git
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37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package image
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import (
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"context"
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"io"
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)
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// contextInput 在读取图像编码时检查调用方取消状态
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type contextInput struct {
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io.ReadCloser
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ctx context.Context
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}
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// Read 检查取消状态后读取原始数据
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// 入参: data 数据缓冲区
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// 返回: int 读取字节数, error 读取或取消错误
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func (r contextInput) Read(data []byte) (int, error) {
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if err := r.ctx.Err(); err != nil {
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return 0, err
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}
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return r.ReadCloser.Read(data)
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}
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