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make working with non-go-comparable object properties a little easier

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This commit is contained in:
Avi Zimmerman 2021-01-14 07:33:27 +02:00
parent 37c529bedf
commit d83b9c8b12
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GPG Key ID: E62BAB8473537D93
4 changed files with 18 additions and 28 deletions
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2
go.mod
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@ -4,5 +4,5 @@ go 1.15
require (
github.com/mattn/go-pointer v0.0.1
github.com/tinyzimmer/go-glib v0.0.2
github.com/tinyzimmer/go-glib v0.0.3
)

2
go.sum
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@ -2,3 +2,5 @@ github.com/mattn/go-pointer v0.0.1 h1:n+XhsuGeVO6MEAp7xyEukFINEa+Quek5psIR/ylA6o
github.com/mattn/go-pointer v0.0.1/go.mod h1:2zXcozF6qYGgmsG+SeTZz3oAbFLdD3OWqnUbNvJZAlc=
github.com/tinyzimmer/go-glib v0.0.2 h1:hdvjwrhcS6WrMMeqfxsf3e7/lOhV8gbVyJ9/sN3LfyY=
github.com/tinyzimmer/go-glib v0.0.2/go.mod h1:D5rd0CvYn1p7TBhwlwnBXHSr4d8lwEY9JImPQ66S+Bs=
github.com/tinyzimmer/go-glib v0.0.3 h1:yPax+QpAcmm16Ye3RZOsBVR0UpMZ9JnglJCgrlBN+C8=
github.com/tinyzimmer/go-glib v0.0.3/go.mod h1:D5rd0CvYn1p7TBhwlwnBXHSr4d8lwEY9JImPQ66S+Bs=

3
gst/g_param_spec_constructors.go
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@ -117,9 +117,6 @@ func NewFloat64Param(name, nick, blurb string, min, max, defaultValue float64, f
return &ParamSpec{paramSpec: paramSpec}
}
// TypeCaps is the static Glib Type for a GstCaps.
var TypeCaps = glib.Type(C.gst_caps_get_type())
// NewBoxedParam creates a new ParamSpec containing a boxed type. Some helper type castings are included
// in these bindings.
func NewBoxedParam(name, nick, blurb string, boxedType glib.Type, flags ParameterFlags) *ParamSpec {

39
gst/gst_caps.go
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@ -21,6 +21,9 @@ import (
"github.com/tinyzimmer/go-glib/glib"
)
// TypeCaps is the static Glib Type for a GstCaps.
var TypeCaps = glib.Type(C.gst_caps_get_type())
// Caps is a go wrapper around GstCaps.
type Caps struct {
native *C.GstCaps
@ -72,30 +75,6 @@ func NewFullCaps(structures ...*Structure) *Caps {
return caps
}
// // NewSimpleCaps creates new caps with the given media format and key value pairs.
// // The key of each pair must be a string, followed by any field that can be converted
// // to a GType.
// func NewSimpleCaps(mediaFormat string, fieldVals ...interface{}) (*Caps, error) {
// if len(fieldVals)%2 != 0 {
// return nil, errors.New("Received odd number of key/value pairs")
// }
// caps := NewEmptySimpleCaps(mediaFormat)
// strParts := make([]string, 0)
// for i := 0; i < len(fieldVals); i = i + 2 {
// fieldKey, ok := fieldVals[i].(string)
// if !ok {
// return nil, errors.New("One or more field keys are not a valid string")
// }
// strParts = append(strParts, fmt.Sprintf("%s=%v", fieldKey, fieldVals[i+1]))
// }
// structure := NewStructureFromString(strings.Join(strParts, ", "))
// if structure == nil {
// return nil, errors.New("Could not build structure from the provided arguments")
// }
// caps.AppendStructure(structure)
// return caps, nil
// }
// NewCapsFromString creates a new Caps object from the given string.
//
// caps := gst.NewCapsFromString("audio/x-raw, channels=2")
@ -120,6 +99,18 @@ func NewRawCaps(format string, rate, channels int) *Caps {
func (c *Caps) unsafe() unsafe.Pointer { return unsafe.Pointer(c.native) }
// ToGValue returns a GValue containing the given caps. Note that under unexpected circumstances in allocation
// this function can return nil. A reference to these caps is taken by the resulting value, so they are safe to
// unref if not needed anymore.
func (c *Caps) ToGValue() *glib.Value {
val, err := glib.ValueInit(glib.Type(C.getCapsType()))
if err != nil {
return nil
}
C.gst_value_set_caps((*C.GValue)(unsafe.Pointer(val.GValue)), c.Instance())
return val
}
// Ref increases the ref count on these caps by one.
//
// From this point on, until the caller calls Unref or MakeWritable, it is guaranteed that the caps object