mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 21:32:20 +02:00
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
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// Copyright 2016 Hajime Hoshi
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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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package audio
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"github.com/hajimehoshi/go-vorbis"
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)
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type OggStream struct {
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buf *bytes.Reader
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}
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func (c *Context) NewOggStream(src io.Reader) (*OggStream, error) {
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decoded, channels, sampleRate, err := vorbis.Decode(src)
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if err != nil {
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return nil, err
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}
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if channels != 2 {
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return nil, errors.New("audio: number of channels must be 2")
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}
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if sampleRate != c.sampleRate {
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return nil, fmt.Errorf("audio: sample rate must be %d but %d", c.sampleRate, sampleRate)
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}
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// TODO: Read all data once so that Seek can be implemented easily.
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// We should look for a wiser way.
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b, err := ioutil.ReadAll(decoded)
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if err != nil {
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return nil, err
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}
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s := &OggStream{
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buf: bytes.NewReader(b),
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}
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return s, nil
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}
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func (s *OggStream) Read(p []byte) (int, error) {
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return s.buf.Read(p)
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}
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func (s *OggStream) Seek(offset int64, whence int) (int64, error) {
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return s.buf.Seek(offset, whence)
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}
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