internal/pipewire: preallocate for footer

This is useful during serialisation.

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 12 insertions, 0 deletions

diff --git a/internal/pipewire/core.go b/internal/pipewire/core.go
index a15d0803..4b61972b 100644
--- a/internal/pipewire/core.go
+++ b/internal/pipewire/core.go
@@ -81,6 +81,12 @@ type FooterCoreGeneration struct {
 	RegistryGeneration Long `json:"registry_generation"`
 }
 
+// Size satisfies [KnownSize] with a constant value.
+func (fcg FooterCoreGeneration) Size() Word {
+	return SizePrefix +
+		Size(SizeLong)
+}
+
 // The FooterClientGeneration indicates to the server what is the last
 // registry generation number the client has processed.
 //
@@ -91,6 +97,12 @@ type FooterClientGeneration struct {
 	ClientGeneration Long `json:"client_generation"`
 }
 
+// Size satisfies [KnownSize] with a constant value.
+func (fcg FooterClientGeneration) Size() Word {
+	return SizePrefix +
+		Size(SizeLong)
+}
+
 // A CoreInfo event is emitted by the server upon connection
 // with the more information about the server.
 type CoreInfo struct {