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140d3bbf59
* 取消用户设置的压缩级别，现在压缩级别通过系统自动设置 * Pool中的对象命中100万次时自动销毁，避免内存泄漏 * 降低Pool中的对象数量，避免占用太多内存 * 根据系统CPU线程数自动计算压缩级别，避免消耗太多CPU * zstd限制解码的最大Window * zstd使用低内存模式
56 lines
1.1 KiB
Go
56 lines
1.1 KiB
Go
// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
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//go:build !plus || !linux
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package compressions
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import (
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"github.com/andybalholm/brotli"
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"io"
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)
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type BrotliWriter struct {
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BaseWriter
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writer *brotli.Writer
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level int
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}
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func NewBrotliWriter(writer io.Writer, level int) (Writer, error) {
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return sharedBrotliWriterPool.Get(writer, level)
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}
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func newBrotliWriter(writer io.Writer) (*BrotliWriter, error) {
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var level = GenerateCompressLevel(brotli.BestSpeed, brotli.BestCompression)
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return &BrotliWriter{
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writer: brotli.NewWriterOptions(writer, brotli.WriterOptions{
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Quality: level,
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LGWin: 14, // TODO 在全局设置里可以设置此值
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}),
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level: level,
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}, nil
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}
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func (this *BrotliWriter) Write(p []byte) (int, error) {
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return this.writer.Write(p)
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}
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func (this *BrotliWriter) Flush() error {
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return this.writer.Flush()
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}
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func (this *BrotliWriter) Reset(newWriter io.Writer) {
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this.writer.Reset(newWriter)
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}
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func (this *BrotliWriter) RawClose() error {
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return this.writer.Close()
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}
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func (this *BrotliWriter) Close() error {
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return this.Finish(this)
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}
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func (this *BrotliWriter) Level() int {
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return this.level
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}
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