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Fix color conversions

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- Fix R-B byte order in screen capture
- Set image metadata everytime in screen capture
- Fix pixel format conversion from I444
- Fix ToI420 output slice length
This commit is contained in:
Atsushi Watanabe
2020-02-15 19:11:58 +09:00
committed by Lukas Herman
parent cad9f41047
commit bc3882644e
3 changed files with 23 additions and 11 deletions
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pkg/driver/screen/x11_linux.go
+8 -4
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@@ -62,8 +62,8 @@ func (s *screen) Close() error {
func (s *screen) VideoRecord(p prop.Media) (video.Reader, error) {
rect := s.reader.img.Bounds()
w := rect.Max.X - rect.Min.X
h := rect.Max.Y - rect.Min.Y
w := rect.Dx()
h := rect.Dy()
imgI444 := image.NewYCbCr(rect, image.YCbCrSubsampleRatio444)
if p.FrameRate == 0 {
@@ -75,6 +75,10 @@ func (s *screen) VideoRecord(p prop.Media) (video.Reader, error) {
<-s.tick.C
img := s.reader.Read()
// Convert it to I444
imgI444.SubsampleRatio = image.YCbCrSubsampleRatio444
imgI444.Rect = rect
imgI444.YStride = w
imgI444.CStride = w
for y := 0; y < h; y++ {
iyBase := y * imgI444.YStride
icBase := y * imgI444.CStride
@@ -95,8 +99,8 @@ func (s *screen) VideoRecord(p prop.Media) (video.Reader, error) {
func (s *screen) Properties() []prop.Media {
rect := s.reader.img.Bounds()
w := rect.Max.X - rect.Min.X
h := rect.Max.Y - rect.Min.Y
w := rect.Dx()
h := rect.Dy()
return []prop.Media{
{
DeviceID: deviceID(s.num),