-
Notifications
You must be signed in to change notification settings - Fork 0
/
encoder.go
79 lines (64 loc) · 1.47 KB
/
encoder.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
package io
import (
"image"
"io"
"os"
)
type RawEncoder interface {
Encode(w io.Writer, img image.Image) error
}
type Encoder interface {
RawEncoder
Encoder() RawEncoder
EncodeBytes(img image.Image) ([]byte, error)
EncodeFFMPEG(img image.Image) ([]string, error)
}
type Decoder interface {
Decode(r io.Reader) (image.Image, error)
}
type imageCodec interface {
Encoder
Decoder
}
type ImageCodec interface {
imageCodec
Read(fileName string) (image.Image, error)
Write(string, image.Image) error
}
type imageCodecImpl struct {
codec imageCodec
}
func (c *imageCodecImpl) Encoder() RawEncoder {
return c.codec.Encoder()
}
func (c *imageCodecImpl) Encode(w io.Writer, img image.Image) error {
return c.codec.Encode(w, img)
}
func (c *imageCodecImpl) EncodeBytes(img image.Image) ([]byte, error) {
return c.codec.EncodeBytes(img)
}
func (c *imageCodecImpl) Decode(r io.Reader) (image.Image, error) {
return c.codec.Decode(r)
}
func (c *imageCodecImpl) Read(fileName string) (image.Image, error) {
f, err := os.Open(fileName)
if err != nil {
return nil, err
}
defer f.Close()
return c.Decode(f)
}
func (c *imageCodecImpl) Write(fileName string, img image.Image) error {
f, err := os.Create(fileName)
if err != nil {
return err
}
defer f.Close()
return c.Encode(f, img)
}
func (c *imageCodecImpl) EncodeFFMPEG(img image.Image) ([]string, error) {
return c.codec.EncodeFFMPEG(img)
}
func codec(codec imageCodec) ImageCodec {
return &imageCodecImpl{codec: codec}
}