64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
// Copyright 2017 Google Inc.
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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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//
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package pipoint
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import (
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"fmt"
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"os"
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"os/exec"
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"juju.nz/x/pipoint/util"
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)
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// AudioOut can play files or speech.
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type AudioOut struct {
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queued chan *exec.Cmd
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}
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// NewAudioOut creates a new, running audio output.
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func NewAudioOut() *AudioOut {
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a := &AudioOut{
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queued: make(chan *exec.Cmd, 10),
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}
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go a.run()
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return a
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}
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// Play plays an audio file.
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func (a *AudioOut) Play(path string) {
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a.queued <- exec.Command("ogg123", path)
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}
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// Say plays a pre-recorded phrase, or falls back to espeak.
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func (a *AudioOut) Say(text string) {
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rendered := fmt.Sprintf("phrase/%s.ogg", util.NormText(text))
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fi, err := os.Stat(rendered)
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if err == nil && fi.Mode().IsRegular() {
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a.Play(rendered)
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} else {
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a.queued <- exec.Command("espeak", text)
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}
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}
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// run executes the commands to play the sounds.
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func (a *AudioOut) run() {
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for {
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cmd := <-a.queued
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cmd.Run()
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}
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}
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