screenshot

Documentation

Index

• func DefaultPicsDir() string
• type ImageTags
• type JFIFMarkerTag
  • func JFIFMarkerAPP(n int) JFIFMarkerTag
  • func JFIFMarkerSOF(n int) JFIFMarkerTag
  • func (t JFIFMarkerTag) Segment() bool
  • func (t JFIFMarkerTag) String() string
  • func (t JFIFMarkerTag) WriteMarker(w io.Writer, size uint16) error
• type JFIFScanner
  • func NewJFIFScanner(r io.Reader) *JFIFScanner
  • func (s *JFIFScanner) Consume(segment io.Reader) (int64, error)
  • func (s *JFIFScanner) Scan() bool
  • func (s *JFIFScanner) Segment() io.Reader
• type Screenshot
  • func (scrns *Screenshot) Close() error
  • func (scrns *Screenshot) OnJournalEvent(e watched.JounalEvent) (err error)
  • func (scrns *Screenshot) OnStatusEvent(e watched.StatusEvent) error
  • func (scrns *Screenshot) OutDir(t time.Time, sys, body string) string
  • func (scrns *Screenshot) OutFilePat(t time.Time, sys, body string) string
  • func (scrns *Screenshot) ScrShot(name string) (path string)

Examples

• JFIFScanner

Functions

func DefaultPicsDir

func DefaultPicsDir() string

Types

type ImageTags

type ImageTags struct {
	Time   time.Time `json:",omitempty"`
	CMDR   string    `json:",omitempty"`
	System string    `json:",omitempty"`
	Body   string    `json:",omitempty"`
	Port   string    `json:",omitempty"`
	Coos   []float64 `json:",omitempty"`
}

type JFIFMarkerTag

type JFIFMarkerTag byte

const (
	JFIFMarkerSOI   JFIFMarkerTag = 0xD8
	JFIFMarkerAPP0  JFIFMarkerTag = 0xE0 // JFIF Tag
	JFIFMarkerDAC   JFIFMarkerTag = 0xCC
	JFIFMarkerDQT   JFIFMarkerTag = 0xDB
	JFIFMarkerDRI   JFIFMarkerTag = 0xDD
	JFIFMarkerAPP1  JFIFMarkerTag = 0xE1 // EXIF Tag
	JFIFMarkerAPP14 JFIFMarkerTag = 0xEE // Often for copyright
	JFIFMarkerCOM   JFIFMarkerTag = 0xFE
	JFIFMarkerSOS   JFIFMarkerTag = 0xDA
	JFIFMarkerEOI   JFIFMarkerTag = 0xD9
)

func JFIFMarkerAPP

func JFIFMarkerAPP(n int) JFIFMarkerTag

func JFIFMarkerSOF

func JFIFMarkerSOF(n int) JFIFMarkerTag

JFIFMarkerC does not check the range of n

func (JFIFMarkerTag) Segment

func (t JFIFMarkerTag) Segment() bool

func (JFIFMarkerTag) String

func (t JFIFMarkerTag) String() string

func (JFIFMarkerTag) WriteMarker

func (t JFIFMarkerTag) WriteMarker(w io.Writer, size uint16) error

type JFIFScanner

type JFIFScanner struct {
	Err  error
	Tag  JFIFMarkerTag
	Size int
	// contains filtered or unexported fields
}

Example

img := image.NewRGBA(image.Rectangle{
	image.Point{},
	image.Point{16, 16},
})
var buf bytes.Buffer
if err := jpeg.Encode(&buf, img, nil); err != nil {
	fmt.Println(err)
}
scn := NewJFIFScanner(&buf)
for scn.Scan() {
	if scn.Err != nil {
		fmt.Println(scn.Err)
		break
	}
	if scn.Tag.Segment() {
		fmt.Printf("%s %d", scn.Tag, scn.Size)
	} else {
		fmt.Print(scn.Tag.String())
	}
	n, err := scn.Consume(scn.Segment())
	fmt.Printf(" consumed %d bytes\n", n)
	if err != nil {
		fmt.Println(err)
		break
	}
}

Output:

SOI (D8) consumed 0 bytes
DQT (DB) 132 consumed 130 bytes
SOF0 (C0) 17 consumed 15 bytes
SOF4 (C4) 418 consumed 416 bytes
SOS (DA) consumed 18 bytes

func NewJFIFScanner

func NewJFIFScanner(r io.Reader) *JFIFScanner

func (*JFIFScanner) Consume

func (s *JFIFScanner) Consume(segment io.Reader) (int64, error)

func (*JFIFScanner) Scan

func (s *JFIFScanner) Scan() bool

func (*JFIFScanner) Segment

func (s *JFIFScanner) Segment() io.Reader

type Screenshot

type Screenshot struct {
	EDPicDir    string
	OutRoot     string
	Aspect      float64
	JpegQuality int
	SubstOrig   bool
	RmOrig      bool
	AddTags     bool
	FID         string
	Cmdr        string
}

func (*Screenshot) Close

func (scrns *Screenshot) Close() error

func (*Screenshot) OnJournalEvent

func (scrns *Screenshot) OnJournalEvent(e watched.JounalEvent) (err error)

func (*Screenshot) OnStatusEvent

func (scrns *Screenshot) OnStatusEvent(e watched.StatusEvent) error

func (*Screenshot) OutDir

func (scrns *Screenshot) OutDir(t time.Time, sys, body string) string

func (*Screenshot) OutFilePat

func (scrns *Screenshot) OutFilePat(t time.Time, sys, body string) string

func (*Screenshot) ScrShot

func (scrns *Screenshot) ScrShot(name string) (path string)