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@ -1,18 +1,17 @@
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package main
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import (
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"bytes"
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"context"
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"crypto/sha256"
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"errors"
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"fmt"
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"image/png"
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"io"
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"log"
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"math"
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"net/http"
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"github.com/carlmjohnson/requests"
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"github.com/davidbyttow/govips/v2/vips"
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"github.com/disintegration/imaging"
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"go.goblog.app/app/pkgs/bufferpool"
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)
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@ -145,27 +144,6 @@ func (*localMediaCompressor) compress(url string, upload mediaStorageSaveFunc, h
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if !allowed {
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return "", nil
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}
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// Start Vips
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vips.Startup(&vips.Config{
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CollectStats: false,
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MaxCacheFiles: 0,
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MaxCacheMem: 0,
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MaxCacheSize: 0,
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ConcurrencyLevel: 1,
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})
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// Check type
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var imgType vips.ImageType
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switch fileExtension {
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case "jpg", "jpeg":
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imgType = vips.ImageTypeJPEG
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case "png":
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imgType = vips.ImageTypePNG
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default:
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imgType = vips.ImageTypeUnknown
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}
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if !vips.IsTypeSupported(imgType) {
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return "", nil
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}
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// Download image
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imgBuffer := bufferpool.Get()
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defer bufferpool.Put(imgBuffer)
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@ -178,47 +156,29 @@ func (*localMediaCompressor) compress(url string, upload mediaStorageSaveFunc, h
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log.Println("Local compressor error:", err.Error())
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return "", errors.New("failed to download image using local compressor")
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}
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// Compress image using bimg
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img, err := vips.NewImageFromReader(imgBuffer)
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if err != nil {
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log.Println("Local compressor error:", err.Error())
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return "", errors.New("failed to compress image using local compressor")
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}
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// Auto rotate image
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err = img.AutoRotate()
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// Decode image
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img, err := imaging.Decode(imgBuffer, imaging.AutoOrientation(true))
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if err != nil {
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log.Println("Local compressor error:", err.Error())
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return "", errors.New("failed to compress image using local compressor")
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}
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// Get resize ratio to fit in max width and height
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ratioHeight := float64(defaultCompressionHeight) / float64(img.Height())
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ratioWidth := float64(defaultCompressionWidth) / float64(img.Width())
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ratio := math.Min(ratioHeight, ratioWidth)
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// Resize image (only downscale)
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if ratio < 1 {
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err = img.Resize(ratio, vips.KernelAuto)
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if err != nil {
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log.Println("Local compressor error:", err.Error())
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return "", errors.New("failed to compress image using local compressor")
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}
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// Resize image
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resizedImage := imaging.Fit(img, defaultCompressionWidth, defaultCompressionHeight, imaging.Lanczos)
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// Encode image
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resizedBuffer := bufferpool.Get()
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defer bufferpool.Put(resizedBuffer)
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switch fileExtension {
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case "jpg", "jpeg":
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err = imaging.Encode(resizedBuffer, resizedImage, imaging.JPEG, imaging.JPEGQuality(75))
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case "png":
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err = imaging.Encode(resizedBuffer, resizedImage, imaging.PNG, imaging.PNGCompressionLevel(png.BestCompression))
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}
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// Export resized image
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ep := vips.NewDefaultExportParams()
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ep.StripMetadata = true // Strip metadata
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ep.Interlaced = true // Progressive image
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ep.TrellisQuant = true // Trellis quantization (JPEG only)
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ep.OptimizeCoding = true // Optimize Huffman coding tables (JPEG only)
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ep.OptimizeScans = true // Optimize progressive scans (JPEG only)
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ep.OvershootDeringing = true // Overshoot deringing (JPEG only)
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ep.Compression = 100 // Compression factor
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ep.Quality = 75 // Quality factor
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compressed, _, err := img.Export(ep)
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if err != nil {
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log.Println("Local compressor error:", err.Error())
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return "", errors.New("failed to compress image using local compressor")
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}
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// Upload compressed file
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return uploadCompressedFile(fileExtension, bytes.NewReader(compressed), upload)
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return uploadCompressedFile(fileExtension, resizedBuffer, upload)
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}
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func uploadCompressedFile(fileExtension string, r io.Reader, upload mediaStorageSaveFunc) (string, error) {
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