30 lines
533 B
Go
30 lines
533 B
Go
package capture
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import (
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"bytes"
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"image"
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"image/jpeg"
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"sync"
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)
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var jpegBufPool = sync.Pool{
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New: func() interface{} {
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b := bytes.NewBuffer(make([]byte, 0, 128*1024))
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return b
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},
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}
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func encodeJPEG(img image.Image, quality int) ([]byte, error) {
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buf := jpegBufPool.Get().(*bytes.Buffer)
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buf.Reset()
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err := jpeg.Encode(buf, img, &jpeg.Options{Quality: quality})
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if err != nil {
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jpegBufPool.Put(buf)
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return nil, err
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}
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out := make([]byte, buf.Len())
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copy(out, buf.Bytes())
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jpegBufPool.Put(buf)
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return out, nil
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}
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