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mirror of https://github.com/amitbet/vnc2video.git synced 2025-05-04 21:36:21 +00:00
vnc2video/encoding_copyrect.go
2018-01-20 13:20:07 +02:00

53 lines
1.3 KiB
Go

package vnc2video
import (
"encoding/binary"
"image"
"image/draw"
"vnc2video/logger"
)
type CopyRectEncoding struct {
SX, SY uint16
Image draw.Image
}
func (*CopyRectEncoding) Supported(Conn) bool {
return true
}
func (*CopyRectEncoding) Reset() error {
return nil
}
func (*CopyRectEncoding) Type() EncodingType { return EncCopyRect }
func (enc *CopyRectEncoding) Read(c Conn, rect *Rectangle) error {
logger.Debugf("Reading: CopyRect%v", rect)
if err := binary.Read(c, binary.BigEndian, &enc.SX); err != nil {
return err
}
if err := binary.Read(c, binary.BigEndian, &enc.SY); err != nil {
return err
}
cpyIm := image.NewRGBA(image.Rectangle{Min: image.Point{0, 0}, Max: image.Point{int(rect.Width), int(rect.Height)}})
for x := 0; x < int(rect.Width); x++ {
for y := 0; x < int(rect.Height); y++ {
col := enc.Image.At(x+int(enc.SX), y+int(enc.SY))
cpyIm.Set(x, y, col)
}
}
draw.Draw(enc.Image, enc.Image.Bounds(), cpyIm, image.Point{int(rect.X), int(rect.Y)}, draw.Src)
return nil
}
func (enc *CopyRectEncoding) Write(c Conn, rect *Rectangle) error {
if err := binary.Write(c, binary.BigEndian, enc.SX); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, enc.SY); err != nil {
return err
}
return nil
}