增加chunk图片文件支持width和height

2 files changed, 13 insertions, 10 deletions

diff --git a/weed/images/preprocess.go b/weed/images/preprocess.go
index 56f14eaa4..0cfb66c6b 100644
--- a/weed/images/preprocess.go
+++ b/weed/images/preprocess.go
@@ -3,6 +3,8 @@ package images
 import (
 	"path/filepath"
 	"strings"
+	"bytes"
+	"io"
 )
 
 /*
@@ -13,15 +15,15 @@ import (
 * Call this function on any file uploaded to SeaweedFS
 *
  */
-func MaybePreprocessImage(filename string, data []byte, width, height int) (resized []byte, w int, h int) {
+func MaybePreprocessImage(filename string, data []byte, width, height int) (resized io.ReadSeeker, w int, h int) {
 	ext := filepath.Ext(filename)
 	ext = strings.ToLower(ext)
 	switch ext {
 	case ".png", ".gif":
-		return Resized(ext, data, width, height, "")
+		return Resized(ext, bytes.NewReader(data), width, height, "")
 	case ".jpg", ".jpeg":
 		data = FixJpgOrientation(data)
-		return Resized(ext, data, width, height, "")
+		return Resized(ext, bytes.NewReader(data), width, height, "")
 	}
-	return data, 0, 0
+	return bytes.NewReader(data), 0, 0
 }
diff --git a/weed/images/resizing.go b/weed/images/resizing.go
index 0ea6b1777..ff0eff5e1 100644
--- a/weed/images/resizing.go
+++ b/weed/images/resizing.go
@@ -9,13 +9,14 @@ import (
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/disintegration/imaging"
+	"io"
 )
 
-func Resized(ext string, data []byte, width, height int, mode string) (resized []byte, w int, h int) {
+func Resized(ext string, read io.ReadSeeker, width, height int, mode string) (resized io.ReadSeeker, w int, h int) {
 	if width == 0 && height == 0 {
-		return data, 0, 0
+		return read, 0, 0
 	}
-	srcImage, _, err := image.Decode(bytes.NewReader(data))
+	srcImage, _, err := image.Decode(read)
 	if err == nil {
 		bounds := srcImage.Bounds()
 		var dstImage *image.NRGBA
@@ -34,7 +35,7 @@ func Resized(ext string, data []byte, width, height int, mode string) (resized [
 				}
 			}
 		} else {
-			return data, bounds.Dx(), bounds.Dy()
+			return read, bounds.Dx(), bounds.Dy()
 		}
 		var buf bytes.Buffer
 		switch ext {
@@ -45,9 +46,9 @@ func Resized(ext string, data []byte, width, height int, mode string) (resized [
 		case ".gif":
 			gif.Encode(&buf, dstImage, nil)
 		}
-		return buf.Bytes(), dstImage.Bounds().Dx(), dstImage.Bounds().Dy()
+		return bytes.NewReader(buf.Bytes()), dstImage.Bounds().Dx(), dstImage.Bounds().Dy()
 	} else {
 		glog.Error(err)
 	}
-	return data, 0, 0
+	return read, 0, 0
 }