mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
// Copyright 2018 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 js
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// +build !wasm
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package vorbis
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import (
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"io"
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"io/ioutil"
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"github.com/hajimehoshi/ebiten/audio"
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"github.com/hajimehoshi/ebiten/audio/vorbis/internal/stb"
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)
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type decoderImpl struct {
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data []float32
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channels int
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sampleRate int
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}
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func (d *decoderImpl) Read(buf []float32) (int, error) {
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if len(d.data) == 0 {
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return 0, io.EOF
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}
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n := copy(buf, d.data)
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d.data = d.data[n:]
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return n, nil
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}
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func (d *decoderImpl) Length() int64 {
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return int64(len(d.data) / d.channels)
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}
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func (d *decoderImpl) Channels() int {
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return d.channels
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}
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func (d *decoderImpl) SampleRate() int {
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return d.sampleRate
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}
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func newDecoder(in audio.ReadSeekCloser) (decoder, error) {
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buf, err := ioutil.ReadAll(in)
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if err != nil {
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return nil, err
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}
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data, channels, sampleRate, err := stb.DecodeVorbis(buf)
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if err != nil {
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return nil, err
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}
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return &decoderImpl{data, channels, sampleRate}, nil
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}
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