73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package gstreamer
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import (
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"fmt"
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"github.com/rs/zerolog"
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"github.com/tinyzimmer/go-gst/gst"
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"time"
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)
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func (o *ImageOverlay) create(log zerolog.Logger) (*gst.Element, error) {
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element, err := gst.NewElementWithName("gdkpixbufoverlay", o.Name)
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if err != nil {
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log.Error().Msgf("could not create image overlay %s: %v\n", o.Name, err)
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return nil, fmt.Errorf("could not create image overlay %s", o.Name)
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}
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setPropertyWrapper(element, "positioning-mode", 1) // pixels-absolute
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setPropertyWrapper(element, "location", o.Path)
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o.update(log)
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o.element = element
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return element, err
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}
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func (o *ImageOverlay) update(_ zerolog.Logger) {
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setPropertyWrapper(o.element, "offset-x", o.X)
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setPropertyWrapper(o.element, "offset-y", o.Y)
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if o.Display {
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o.show()
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} else {
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o.hide()
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}
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}
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func (o *ImageOverlay) show() gst.ClockCallback {
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return func(clock *gst.Clock, clockTime time.Duration) bool {
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setPropertyWrapper(o.element, "alpha", 1)
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return true
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}
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}
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func (o *ImageOverlay) hide() gst.ClockCallback {
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return func(clock *gst.Clock, clockTime time.Duration) bool {
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setPropertyWrapper(o.element, "alpha", 0)
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return true
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}
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}
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func (o *ImageOverlay) getName() string {
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return o.Name
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}
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func (o *ImageOverlay) getBlendInTime() time.Duration {
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return o.BlendIn
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}
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func (o *ImageOverlay) getBlendOutTime() time.Duration {
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return o.BlendOut
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}
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func (o *ImageOverlay) getElement() *gst.Element {
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return o.element
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}
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func (o *ImageOverlay) setElement(element *gst.Element) {
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o.element = element
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}
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func (o *ImageOverlay) getType() string {
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return "imageoverlay"
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}
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