李远军
5 years ago
12 changed files with 267 additions and 16 deletions
-
3k8s/seaweedfs/templates/volume-statefulset.yaml
-
3k8s/seaweedfs/values.yaml
-
1weed/command/server.go
-
4weed/command/volume.go
-
182weed/images/orientation.go
-
20weed/images/orientation_test.go
-
29weed/images/preprocess.go
-
2weed/pb/shared_values.go
-
3weed/server/volume_server.go
-
2weed/server/volume_server_handlers_write.go
-
10weed/storage/needle/needle.go
-
18weed/wdclient/masterclient.go
@ -0,0 +1,182 @@ |
|||
package images |
|||
|
|||
import ( |
|||
"bytes" |
|||
"image" |
|||
"image/draw" |
|||
"image/jpeg" |
|||
"log" |
|||
|
|||
"github.com/seaweedfs/goexif/exif" |
|||
) |
|||
|
|||
//many code is copied from http://camlistore.org/pkg/images/images.go
|
|||
func FixJpgOrientation(data []byte) (oriented []byte) { |
|||
ex, err := exif.Decode(bytes.NewReader(data)) |
|||
if err != nil { |
|||
return data |
|||
} |
|||
tag, err := ex.Get(exif.Orientation) |
|||
if err != nil { |
|||
return data |
|||
} |
|||
angle := 0 |
|||
flipMode := FlipDirection(0) |
|||
orient, err := tag.Int(0) |
|||
if err != nil { |
|||
return data |
|||
} |
|||
switch orient { |
|||
case topLeftSide: |
|||
// do nothing
|
|||
return data |
|||
case topRightSide: |
|||
flipMode = 2 |
|||
case bottomRightSide: |
|||
angle = 180 |
|||
case bottomLeftSide: |
|||
angle = 180 |
|||
flipMode = 2 |
|||
case leftSideTop: |
|||
angle = -90 |
|||
flipMode = 2 |
|||
case rightSideTop: |
|||
angle = -90 |
|||
case rightSideBottom: |
|||
angle = 90 |
|||
flipMode = 2 |
|||
case leftSideBottom: |
|||
angle = 90 |
|||
} |
|||
|
|||
if srcImage, _, err := image.Decode(bytes.NewReader(data)); err == nil { |
|||
dstImage := flip(rotate(srcImage, angle), flipMode) |
|||
var buf bytes.Buffer |
|||
jpeg.Encode(&buf, dstImage, nil) |
|||
return buf.Bytes() |
|||
} |
|||
|
|||
return data |
|||
} |
|||
|
|||
// Exif Orientation Tag values
|
|||
// http://sylvana.net/jpegcrop/exif_orientation.html
|
|||
const ( |
|||
topLeftSide = 1 |
|||
topRightSide = 2 |
|||
bottomRightSide = 3 |
|||
bottomLeftSide = 4 |
|||
leftSideTop = 5 |
|||
rightSideTop = 6 |
|||
rightSideBottom = 7 |
|||
leftSideBottom = 8 |
|||
) |
|||
|
|||
// The FlipDirection type is used by the Flip option in DecodeOpts
|
|||
// to indicate in which direction to flip an image.
|
|||
type FlipDirection int |
|||
|
|||
// FlipVertical and FlipHorizontal are two possible FlipDirections
|
|||
// values to indicate in which direction an image will be flipped.
|
|||
const ( |
|||
FlipVertical FlipDirection = 1 << iota |
|||
FlipHorizontal |
|||
) |
|||
|
|||
type DecodeOpts struct { |
|||
// Rotate specifies how to rotate the image.
|
|||
// If nil, the image is rotated automatically based on EXIF metadata.
|
|||
// If an int, Rotate is the number of degrees to rotate
|
|||
// counter clockwise and must be one of 0, 90, -90, 180, or
|
|||
// -180.
|
|||
Rotate interface{} |
|||
|
|||
// Flip specifies how to flip the image.
|
|||
// If nil, the image is flipped automatically based on EXIF metadata.
|
|||
// Otherwise, Flip is a FlipDirection bitfield indicating how to flip.
|
|||
Flip interface{} |
|||
} |
|||
|
|||
func rotate(im image.Image, angle int) image.Image { |
|||
var rotated *image.NRGBA |
|||
// trigonometric (i.e counter clock-wise)
|
|||
switch angle { |
|||
case 90: |
|||
newH, newW := im.Bounds().Dx(), im.Bounds().Dy() |
|||
rotated = image.NewNRGBA(image.Rect(0, 0, newW, newH)) |
|||
for y := 0; y < newH; y++ { |
|||
for x := 0; x < newW; x++ { |
|||
rotated.Set(x, y, im.At(newH-1-y, x)) |
|||
} |
|||
} |
|||
case -90: |
|||
newH, newW := im.Bounds().Dx(), im.Bounds().Dy() |
|||
rotated = image.NewNRGBA(image.Rect(0, 0, newW, newH)) |
|||
for y := 0; y < newH; y++ { |
|||
for x := 0; x < newW; x++ { |
|||
rotated.Set(x, y, im.At(y, newW-1-x)) |
|||
} |
|||
} |
|||
case 180, -180: |
|||
newW, newH := im.Bounds().Dx(), im.Bounds().Dy() |
|||
rotated = image.NewNRGBA(image.Rect(0, 0, newW, newH)) |
|||
for y := 0; y < newH; y++ { |
|||
for x := 0; x < newW; x++ { |
|||
rotated.Set(x, y, im.At(newW-1-x, newH-1-y)) |
|||
} |
|||
} |
|||
default: |
|||
return im |
|||
} |
|||
return rotated |
|||
} |
|||
|
|||
// flip returns a flipped version of the image im, according to
|
|||
// the direction(s) in dir.
|
|||
// It may flip the imput im in place and return it, or it may allocate a
|
|||
// new NRGBA (if im is an *image.YCbCr).
|
|||
func flip(im image.Image, dir FlipDirection) image.Image { |
|||
if dir == 0 { |
|||
return im |
|||
} |
|||
ycbcr := false |
|||
var nrgba image.Image |
|||
dx, dy := im.Bounds().Dx(), im.Bounds().Dy() |
|||
di, ok := im.(draw.Image) |
|||
if !ok { |
|||
if _, ok := im.(*image.YCbCr); !ok { |
|||
log.Printf("failed to flip image: input does not satisfy draw.Image") |
|||
return im |
|||
} |
|||
// because YCbCr does not implement Set, we replace it with a new NRGBA
|
|||
ycbcr = true |
|||
nrgba = image.NewNRGBA(image.Rect(0, 0, dx, dy)) |
|||
di, ok = nrgba.(draw.Image) |
|||
if !ok { |
|||
log.Print("failed to flip image: could not cast an NRGBA to a draw.Image") |
|||
return im |
|||
} |
|||
} |
|||
if dir&FlipHorizontal != 0 { |
|||
for y := 0; y < dy; y++ { |
|||
for x := 0; x < dx/2; x++ { |
|||
old := im.At(x, y) |
|||
di.Set(x, y, im.At(dx-1-x, y)) |
|||
di.Set(dx-1-x, y, old) |
|||
} |
|||
} |
|||
} |
|||
if dir&FlipVertical != 0 { |
|||
for y := 0; y < dy/2; y++ { |
|||
for x := 0; x < dx; x++ { |
|||
old := im.At(x, y) |
|||
di.Set(x, y, im.At(x, dy-1-y)) |
|||
di.Set(x, dy-1-y, old) |
|||
} |
|||
} |
|||
} |
|||
if ycbcr { |
|||
return nrgba |
|||
} |
|||
return im |
|||
} |
|||
@ -0,0 +1,20 @@ |
|||
package images |
|||
|
|||
import ( |
|||
"io/ioutil" |
|||
"os" |
|||
"testing" |
|||
) |
|||
|
|||
func TestXYZ(t *testing.T) { |
|||
fname := "sample1.jpg" |
|||
|
|||
dat, _ := ioutil.ReadFile(fname) |
|||
|
|||
fixed_data := FixJpgOrientation(dat) |
|||
|
|||
ioutil.WriteFile("fixed1.jpg", fixed_data, 0644) |
|||
|
|||
os.Remove("fixed1.jpg") |
|||
|
|||
} |
|||
@ -0,0 +1,29 @@ |
|||
package images |
|||
|
|||
import ( |
|||
"bytes" |
|||
"io" |
|||
"path/filepath" |
|||
"strings" |
|||
) |
|||
|
|||
/* |
|||
* Preprocess image files on client side. |
|||
* 1. possibly adjust the orientation |
|||
* 2. resize the image to a width or height limit |
|||
* 3. remove the exif data |
|||
* Call this function on any file uploaded to SeaweedFS |
|||
* |
|||
*/ |
|||
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, bytes.NewReader(data), width, height, "") |
|||
case ".jpg", ".jpeg": |
|||
data = FixJpgOrientation(data) |
|||
return Resized(ext, bytes.NewReader(data), width, height, "") |
|||
} |
|||
return bytes.NewReader(data), 0, 0 |
|||
} |
|||
@ -1,5 +1,5 @@ |
|||
package pb |
|||
|
|||
const ( |
|||
AdminShellClient = "adminShell" |
|||
AdminShellClient = "shell" |
|||
) |
|||
Write
Preview
Loading…
Cancel
Save
Reference in new issue