From 264931d5744309e6fc2c0b7f8d31ed39fbae0617 Mon Sep 17 00:00:00 2001
From: localhost_frssoft <userquicker@disroot.org>
Date: Sat, 7 Jan 2023 01:38:45 +0300
Subject: [PATCH] Some mini changes

---
 README.md          |  3 +++
 transcoder/gif.go  |  2 +-
 transcoder/jpeg.go | 12 ++----------
 transcoder/png.go  |  2 +-
 transcoder/zip.go  |  6 +++---
 5 files changed, 10 insertions(+), 15 deletions(-)

diff --git a/README.md b/README.md
index 0d56e21..6fabbcc 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,9 @@
 Compy
 =====
 
+Forked from upstream: https://github.com/barnacs/compy  
+Main changes in this fork/branch is maximum of compression by default (worst quality)
+
 Compy is an HTTP/HTTPS forward proxy with content compression/transcoding capabilities.  
 One use case is to reduce bandwidth usage when browsing on limited mobile broadband connection.
 
diff --git a/transcoder/gif.go b/transcoder/gif.go
index a4901b6..0f32b73 100644
--- a/transcoder/gif.go
+++ b/transcoder/gif.go
@@ -17,7 +17,7 @@ func (t *Gif) Transcode(w *proxy.ResponseWriter, r *proxy.ResponseReader, header
 	if SupportsWebP(headers) {
 		w.Header().Set("Content-Type", "image/webp")
 		options := webp.Options{
-			Lossless: true,
+			Lossless: false,
 		}
 		if err = webp.Encode(w, img, &options); err != nil {
 			return err
diff --git a/transcoder/jpeg.go b/transcoder/jpeg.go
index c6368cf..2a120b0 100644
--- a/transcoder/jpeg.go
+++ b/transcoder/jpeg.go
@@ -5,7 +5,6 @@ import (
 	"github.com/chai2010/webp"
 	"github.com/pixiv/go-libjpeg/jpeg"
 	"net/http"
-	"strconv"
 )
 
 type Jpeg struct {
@@ -30,20 +29,13 @@ func (t *Jpeg) Transcode(w *proxy.ResponseWriter, r *proxy.ResponseReader, heade
 	}
 
 	encOptions := t.encOptions
-	qualityString := headers.Get("X-Compy-Quality")
-	if qualityString != "" {
-		if quality, err := strconv.Atoi(qualityString); err != nil {
-			return err
-		} else {
-			encOptions.Quality = quality
-		}
-	}
+	encOptions.Quality = 70
 
 	if SupportsWebP(headers) {
 		w.Header().Set("Content-Type", "image/webp")
 		options := webp.Options{
 			Lossless: false,
-			Quality:  float32(encOptions.Quality),
+			Quality:  float32(encOptions.Quality - 20),
 		}
 		if err = webp.Encode(w, img, &options); err != nil {
 			return err
diff --git a/transcoder/png.go b/transcoder/png.go
index 06a6fea..d7adcf1 100644
--- a/transcoder/png.go
+++ b/transcoder/png.go
@@ -18,7 +18,7 @@ func (t *Png) Transcode(w *proxy.ResponseWriter, r *proxy.ResponseReader, header
 	if SupportsWebP(headers) {
 		w.Header().Set("Content-Type", "image/webp")
 		options := webp.Options{
-			Lossless: true,
+			Lossless: false,
 		}
 		if err = webp.Encode(w, img, &options); err != nil {
 			return err
diff --git a/transcoder/zip.go b/transcoder/zip.go
index 629bbcc..65d92c0 100644
--- a/transcoder/zip.go
+++ b/transcoder/zip.go
@@ -51,13 +51,13 @@ func (t *Zip) Transcode(w *proxy.ResponseWriter, r *proxy.ResponseReader, header
 
 	if shouldBrotli && compress(r) {
 		params := brotlienc.NewBrotliParams()
-		params.SetQuality(t.BrotliCompressionLevel)
+		params.SetQuality(11)
 		brw := brotlienc.NewBrotliWriter(params, w.Writer)
 		defer brw.Close()
 		w.Writer = brw
 		w.Header().Set("Content-Encoding", "br")
 	} else if shouldGzip && compress(r) {
-		gzw, err := gzip.NewWriterLevel(w.Writer, t.GzipCompressionLevel)
+		gzw, err := gzip.NewWriterLevel(w.Writer, 9)
 		if err != nil {
 			return err
 		}
@@ -69,5 +69,5 @@ func (t *Zip) Transcode(w *proxy.ResponseWriter, r *proxy.ResponseReader, header
 }
 
 func compress(r *proxy.ResponseReader) bool {
-	return r.Header().Get("Content-Encoding") == ""
+	return true // Always compression 
 }