mirror of
https://github.com/hajimehoshi/ebiten.git
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45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
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// Copyright 2019 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !go1.13 !wasm
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package jsutil
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import (
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"syscall/js"
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)
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func Uint8ArrayToSlice(value js.Value) []byte {
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// Note that TypedArrayOf cannot work correcly on Wasm.
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// See https://github.com/golang/go/issues/31980
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s := make([]byte, value.Get("byteLength").Int())
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a := js.TypedArrayOf(s)
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a.Call("set", value)
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a.Release()
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return s
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}
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func ArrayBufferToSlice(value js.Value) []byte {
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return Uint8ArrayToSlice(js.Global().Get("Uint8Array").New(value))
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}
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func SliceToTypedArray(s interface{}) (js.Value, func()) {
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// Note that TypedArrayOf cannot work correcly on Wasm.
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// See https://github.com/golang/go/issues/31980
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a := js.TypedArrayOf(s)
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return a.Value, func() { a.Release() }
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}
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