fix(webp): fix the actual maximum limit

converter/converter_test.go

@@ -21,6 +21,11 @@ func TestConvertChapter(t *testing.T) {
 			genTestChapter: genBigPages,
 			split:          true,
 		},
+		{
+			name:           "Big Pages, no split",
+			genTestChapter: genBigPages,
+			split:          false,
+		},
 		{
 			name:           "No split pages",
 			genTestChapter: genSmallPages,
@@ -87,7 +92,7 @@ func genBigPages(path string) (*manga.Chapter, error) {
 
 	var pages []*manga.Page
 	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
-		img := image.NewRGBA(image.Rect(0, 0, 300, 10000))
+		img := image.NewRGBA(image.Rect(0, 0, 300, 17000))
 		buf := new(bytes.Buffer)
 		err := jpeg.Encode(buf, img, nil)
 		if err != nil {

converter/webp/webp_converter.go

@@ -17,6 +17,8 @@ import (
 	"sync/atomic"
 )
 
+const webpMaxHeight = 16383
+
 type Converter struct {
 	maxHeight  int
 	cropHeight int
@@ -202,6 +204,9 @@ func (converter *Converter) checkPageNeedsSplit(page *manga.Page) (bool, image.I
 	bounds := img.Bounds()
 	height := bounds.Dy()
 
+	if height >= webpMaxHeight {
+		return false, img, format, fmt.Errorf("page[%d] height %d exceeds maximum height %d of webp format", page.Index, height, webpMaxHeight)
+	}
 	return height >= converter.maxHeight, img, format, nil
 }