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dummy.go
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dummy.go
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// Copyright 2019 The Oto Authors
//
// 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.
package oto
import (
"time"
)
type dummyDriver struct {
sampleRate int
channelNum int
bitDepthInBytes int
current int
}
func newDummyDriver(sampleRate, channelNum, bitDepthInBytes int) *dummyDriver {
return &dummyDriver{
sampleRate: sampleRate,
channelNum: channelNum,
bitDepthInBytes: bitDepthInBytes,
}
}
func (d *dummyDriver) bytes(t time.Duration) int {
return int(float64(d.sampleRate*d.channelNum*d.bitDepthInBytes) * float64(t) / float64(time.Second))
}
func (d *dummyDriver) TryWrite(buf []byte) (int, error) {
d.current += len(buf)
b := d.bytes(100 * time.Millisecond)
for d.current >= b {
time.Sleep(time.Second)
d.current -= b
}
return len(buf), nil
}
func (d *dummyDriver) Close() error {
return nil
}
func (d *dummyDriver) tryWriteCanReturnWithoutWaiting() bool {
return false
}