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internal/pipewire: preallocate for known size
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This is still not efficient by any means, but it should eliminate most non-reflect allocation (all allocation if PODMarshaler is not used).

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra 2025-11-27 02:26:31 +09:00
parent 73987be7d4
commit e028a61fc1
Signed by: cat
SSH Key Fingerprint: SHA256:gQ67O0enBZ7UdZypgtspB2FDM1g3GVw8nX0XSdcFw8Q
2 changed files with 13 additions and 13 deletions
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18
internal/pipewire/core.go
View File

@ -172,10 +172,8 @@ type CoreHello struct {
// Size satisfies [KnownSize] with a constant value.
func (c *CoreHello) Size() Word { return SizePrefix + Size(SizeInt) }
// MarshalBinary satisfies [encoding.BinaryMarshaler] via [MarshalAppend].
func (c *CoreHello) MarshalBinary() ([]byte, error) {
return MarshalAppend(make([]byte, 0, 24), c)
}
// MarshalBinary satisfies [encoding.BinaryMarshaler] via [Marshal].
func (c *CoreHello) MarshalBinary() ([]byte, error) { return Marshal(c) }
// UnmarshalBinary satisfies [encoding.BinaryUnmarshaler] via [Unmarshal].
func (c *CoreHello) UnmarshalBinary(data []byte) error { return Unmarshal(data, c) }
@ -198,10 +196,8 @@ type CoreSync struct {
// Size satisfies [KnownSize] with a constant value.
func (c *CoreSync) Size() Word { return SizePrefix + Size(SizeInt) + Size(SizeInt) }
// MarshalBinary satisfies [encoding.BinaryMarshaler] via [MarshalAppend].
func (c *CoreSync) MarshalBinary() ([]byte, error) {
return MarshalAppend(make([]byte, 0, 40), c)
}
// MarshalBinary satisfies [encoding.BinaryMarshaler] via [Marshal].
func (c *CoreSync) MarshalBinary() ([]byte, error) { return Marshal(c) }
// UnmarshalBinary satisfies [encoding.BinaryUnmarshaler] via [Unmarshal].
func (c *CoreSync) UnmarshalBinary(data []byte) error { return Unmarshal(data, c) }
@ -224,10 +220,8 @@ type CoreGetRegistry struct {
// Size satisfies [KnownSize] with a constant value.
func (c *CoreGetRegistry) Size() Word { return SizePrefix + Size(SizeInt) + Size(SizeInt) }
// MarshalBinary satisfies [encoding.BinaryMarshaler] via [MarshalAppend].
func (c *CoreGetRegistry) MarshalBinary() ([]byte, error) {
return MarshalAppend(make([]byte, 0, 40), c)
}
// MarshalBinary satisfies [encoding.BinaryMarshaler] via [Marshal].
func (c *CoreGetRegistry) MarshalBinary() ([]byte, error) { return Marshal(c) }
// UnmarshalBinary satisfies [encoding.BinaryUnmarshaler] via [Unmarshal].
func (c *CoreGetRegistry) UnmarshalBinary(data []byte) error { return Unmarshal(data, c) }

8
internal/pipewire/pod.go
View File

@ -125,7 +125,13 @@ type UnsupportedSizeError int
func (e UnsupportedSizeError) Error() string { return "size out of range: " + strconv.Itoa(int(e)) }
// Marshal returns the PipeWire POD encoding of v.
func Marshal(v any) ([]byte, error) { return MarshalAppend(make([]byte, 0), v) }
func Marshal(v any) ([]byte, error) {
var data []byte
if s, ok := v.(KnownSize); ok {
data = make([]byte, 0, s.Size())
}
return MarshalAppend(data, v)
}
// MarshalAppend appends the PipeWire POD encoding of v to data.
func MarshalAppend(data []byte, v any) ([]byte, error) {