86 lines
3.7 KiB
Go
86 lines
3.7 KiB
Go
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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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)
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func (o *OutputElement) create(pipeline *gst.Pipeline, lastElement *element, log zerolog.Logger) error {
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elements := map[string]element{}
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e, err := gst.NewElementWithName("videoconvert", fmt.Sprintf("%s-videoconvert", o.Name))
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if err != nil {
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log.Error().Msgf("could not create videoconvert for %s: %v\n", o.Name, err)
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return fmt.Errorf("could not create videoconvert for %s", o.Name)
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}
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err = pipeline.Add(e)
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if err != nil {
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log.Error().Msgf("could not add videoconvert for %s to pipeline: %v\n", o.Name, err)
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return fmt.Errorf("could not add videoconvert for %s to pipeline", o.Name)
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}
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videoconvert := element{element: e, name: fmt.Sprintf("%s-videoconvert", o.Name), prev: lastElement.name, next: fmt.Sprintf("%s-videoscale", o.Name), inputCaps: o.Caps}
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elements[fmt.Sprintf("%s-videoconvert", o.Name)] = videoconvert
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err = lastElement.linkElementWrapper(&videoconvert, log)
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if err != nil {
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log.Error().Msgf("could not link %s to %s: %v\n", o.Name, fmt.Sprintf("%s-videoconvert", o.Name), err)
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return fmt.Errorf("could not link %s to %s", o.Name, fmt.Sprintf("%s-videoconvert", o.Name))
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}
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e, err = gst.NewElementWithName("videoscale", fmt.Sprintf("%s-videoscale", o.Name))
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if err != nil {
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log.Error().Msgf("could not create videoscale for %s: %v\n", o.Name, err)
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return fmt.Errorf("could not create videoscale for %s", o.Name)
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}
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err = pipeline.Add(e)
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if err != nil {
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log.Error().Msgf("could not add videoscale for %s to pipeline: %v\n", o.Name, err)
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return fmt.Errorf("could not add videoscale for %s to pipeline", o.Name)
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}
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videoscale := element{element: e, name: fmt.Sprintf("%s-videoscale", o.Name), prev: fmt.Sprintf("%s-videoconvert", o.Name), next: fmt.Sprintf("%s-videorate", o.Name)}
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elements[fmt.Sprintf("%s-videoscale", o.Name)] = videoscale
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err = videoconvert.linkElementWrapper(&videoscale, log)
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if err != nil {
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log.Error().Msgf("could not link %s to %s: %v\n", fmt.Sprintf("%s-videoconvert", o.Name), fmt.Sprintf("%s-videoscale", o.Name), err)
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return fmt.Errorf("could not link %s to %s", fmt.Sprintf("%s-videoconvert", o.Name), fmt.Sprintf("%s-videoscale", o.Name))
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}
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e, err = gst.NewElementWithName("videorate", fmt.Sprintf("%s-videorate", o.Name))
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if err != nil {
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log.Error().Msgf("could not create videorate for %s: %v\n", o.Name, err)
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return fmt.Errorf("could not create videorate for %s", o.Name)
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}
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err = pipeline.Add(e)
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if err != nil {
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log.Error().Msgf("could not add videorate for %s to pipeline: %v\n", o.Name, err)
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return fmt.Errorf("could not add videorate for %s to pipeline", o.Name)
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}
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videorate := element{element: e, name: fmt.Sprintf("%s-videorate", o.Name), prev: fmt.Sprintf("%s-videoscale", o.Name), next: o.Name}
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elements[fmt.Sprintf("%s-videorate", o.Name)] = videorate
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err = videoscale.linkElementWrapper(&videorate, log)
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if err != nil {
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log.Error().Msgf("could not link %s to %s: %v\n", fmt.Sprintf("%s-videoscale", o.Name), fmt.Sprintf("%s-videorate", o.Name), err)
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return fmt.Errorf("could not link %s to %s", fmt.Sprintf("%s-videoscale", o.Name), fmt.Sprintf("%s-videorate", o.Name))
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}
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e, err = gst.NewElementWithName(o.Type, o.Name)
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if err != nil {
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log.Error().Msgf("could not create element %s: %v\n", o.Name, err)
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return fmt.Errorf("could not create element %s", o.Name)
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}
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for prop, value := range o.Properties {
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setPropertyWrapper(e, prop, value)
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}
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err = pipeline.Add(e)
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if err != nil {
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log.Error().Msgf("could not add element %s to pipeline: %v\n", o.Name, err)
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return fmt.Errorf("could not add element %s to pipeline", o.Name)
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}
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output := element{element: e, name: o.Name, prev: fmt.Sprintf("%s-videoscale", o.Name)}
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elements[o.Name] = output
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o.elements = elements
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return nil
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}
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