mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 11:48:55 +01:00
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
// Copyright 2016 Hajime Hoshi
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build !js
|
|
|
|
package audio
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
|
|
"github.com/hajimehoshi/go-vorbis"
|
|
)
|
|
|
|
type VorbisStream struct {
|
|
buf *bytes.Reader
|
|
}
|
|
|
|
func (c *Context) NewVorbisStream(src io.Reader) (*VorbisStream, error) {
|
|
decoded, channels, sampleRate, err := vorbis.Decode(src)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if channels != 2 {
|
|
return nil, errors.New("audio: number of channels must be 2")
|
|
}
|
|
if sampleRate != c.sampleRate {
|
|
return nil, fmt.Errorf("audio: sample rate must be %d but %d", c.sampleRate, sampleRate)
|
|
}
|
|
// TODO: Read all data once so that Seek can be implemented easily.
|
|
// We should look for a wiser way.
|
|
b, err := ioutil.ReadAll(decoded)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
s := &VorbisStream{
|
|
buf: bytes.NewReader(b),
|
|
}
|
|
return s, nil
|
|
}
|
|
|
|
func (s *VorbisStream) Read(p []byte) (int, error) {
|
|
return s.buf.Read(p)
|
|
}
|
|
|
|
func (s *VorbisStream) Seek(offset int64, whence int) (int64, error) {
|
|
return s.buf.Seek(offset, whence)
|
|
}
|