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improve meta callback implementation

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This commit is contained in:
tinyzimmer
2020-09-29 16:16:57 +03:00
parent 87ea132c45
commit 36baf920d3
3 changed files with 15 additions and 5 deletions
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8
gst/cgo_exports.go
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@@ -58,7 +58,13 @@ func goBusFunc(bus *C.GstBus, cMsg *C.GstMessage, userData C.gpointer) C.gboolea
} }
func getMetaInfoCbFuncs(meta *C.GstMeta) *MetaInfoCallbackFuncs { func getMetaInfoCbFuncs(meta *C.GstMeta) *MetaInfoCallbackFuncs {
return registeredMetas[glib.Type(meta.info._type)] gapi := glib.Type(meta.info.api)
gtype := glib.Type(meta.info._type)
typeCbs := registeredMetas[gapi]
if typeCbs == nil {
return nil
}
return typeCbs[gtype.Name()]
} }
//export goMetaFreeFunc //export goMetaFreeFunc

2
gst/gst_buffer.go
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@@ -188,7 +188,7 @@ func (b *Buffer) Map() *MapInfo {
// //
// Example // Example
// //
// metaInfo := gst.RegisterMeta(glib.TypeFromName("GstObject"), "my-meta", 1024, &gst.MetaInfoCallbackFuncs{ // metaInfo := gst.RegisterMeta(glib.TypeFromName("MyObjectType"), "my-meta", 1024, &gst.MetaInfoCallbackFuncs{
// InitFunc: func(params interface{}, buffer *gst.Buffer) bool { // InitFunc: func(params interface{}, buffer *gst.Buffer) bool {
// paramStr := params.(string) // paramStr := params.(string)
// fmt.Println("Buffer initialized with params:", paramStr) // fmt.Println("Buffer initialized with params:", paramStr)

10
gst/gst_meta.go
View File

@@ -107,8 +107,9 @@ type MetaInfoCallbackFuncs struct {
TransformFunc MetaTransformFunc TransformFunc MetaTransformFunc
} }
// Register metas internally as well so we can track callback functions // Register meta callbacks internally as well so we can track them. Not all
var registeredMetas = make(map[glib.Type]*MetaInfoCallbackFuncs) // GstMeta callbacks include userdata.
var registeredMetas = make(map[glib.Type]map[string]*MetaInfoCallbackFuncs)
// RegisterMeta registers and returns a new MetaInfo instance denoting the // RegisterMeta registers and returns a new MetaInfo instance denoting the
// given type, name, and size. // given type, name, and size.
@@ -127,7 +128,10 @@ func RegisterMeta(api glib.Type, name string, size int64, cbFuncs *MetaInfoCallb
return nil return nil
} }
wrapped := wrapMetaInfo(metaInfo) wrapped := wrapMetaInfo(metaInfo)
registeredMetas[wrapped.Type()] = cbFuncs if registeredMetas[api] == nil {
registeredMetas[api] = make(map[string]*MetaInfoCallbackFuncs)
}
registeredMetas[api][name] = cbFuncs
return wrapped return wrapped
} }