Merge pull request #25 from vishen/text_to_speech

tts: added text-to-speech support

Author: vishen

README.md

@@ -132,6 +132,19 @@ If you would like to see what a device is sending, you are able to `watch` the p
 $ go-chromecast watch
 ```
 
+### Text To Speech
+
+Experimental text-to-speech support has been added. This uses (Google
+Cloud's Text-to-Speech)[https://cloud.google.com/text-to-speech/] to
+turn text into an mp3 audio file, this is then streamed to the device.
+
+Text-to-speech api needs to be enabled https://console.cloud.google.com/flows/enableapi?apiid=texttospeech.googleapis.com and a google service account is required https://console.cloud.google.com/apis/credentials/serviceaccountkey
+
+```
+$ go-chromecast tts <message> --google-service-account=/path/to/service/account.json
+```
+
+
 ## User Interface
 
 ![User-interface example](go-chromecast-ui.png "User-interface example")
@@ -204,9 +217,10 @@ Available Commands:
   seek        Seek by seconds into the currently playing media
   status      Current chromecast status
   stop        Stop casting
+  tts         text-to-speech
   ui          Run the UI
   unpause     Unpause the currently playing media on the chromecast
-  watch       Watch all events sent from a chromecaset device
+  watch       Watch all events sent from a chromecast device
 
 Flags:
   -a, --addr string          Address of the chromecast device
@@ -215,6 +229,7 @@ Flags:
   -n, --device-name string   chromecast device name
       --disable-cache        disable the cache
   -h, --help                 help for go-chromecast
+  -i, --iface string         Network interface to use
   -p, --port string          Port of the chromecast device if 'addr' is specified (default "8009")
   -u, --uuid string          chromecast device uuid
       --with-ui              run with a UI

application/application.go

@@ -457,7 +457,6 @@ func (a *Application) PlayedItems() map[string]PlayedItem {
 }
 
 func (a *Application) Load(filenameOrUrl, contentType string, transcode bool) error {
-
 	var mi mediaItem
 	if strings.HasPrefix(filenameOrUrl, "http://") || strings.HasPrefix(filenameOrUrl, "https://") {
 		if contentType == "" {

cmd/tts.go

@@ -0,0 +1,89 @@
+// Copyright © 2019 Jonathan Pentecost <[email protected]>
+//
+// 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 cmd
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/spf13/cobra"
+	"github.com/vishen/go-chromecast/tts"
+)
+
+// ttsCmd represents the tts command
+var ttsCmd = &cobra.Command{
+	Use:   "tts <message>",
+	Short: "text-to-speech",
+	Run: func(cmd *cobra.Command, args []string) {
+
+		if len(args) != 1 {
+			fmt.Printf("expected exactly one argument to convert to speech\n")
+			return
+		}
+
+		googleServiceAccount, _ := cmd.Flags().GetString("google-service-account")
+		if googleServiceAccount == "" {
+			fmt.Printf("--google-service-account is required\n")
+			return
+		}
+
+		b, err := ioutil.ReadFile(googleServiceAccount)
+		if err != nil {
+			fmt.Printf("unable to open google service account file: %v\n", err)
+			return
+		}
+
+		app, err := castApplication(cmd, args)
+		if err != nil {
+			fmt.Printf("unable to get cast application: %v\n", err)
+			return
+		}
+
+		data, err := tts.Create("Hello, World!", b)
+		if err != nil {
+			fmt.Printf("%v\n", err)
+			return
+		}
+
+		f, err := ioutil.TempFile("", "go-chromecast-tts")
+		if err != nil {
+			fmt.Printf("unable to create temp file: %v", err)
+			return
+		}
+		defer os.Remove(f.Name())
+
+		if _, err := f.Write(data); err != nil {
+			fmt.Printf("unable to write to temp file: %v\n", err)
+			return
+		}
+		if err := f.Close(); err != nil {
+			fmt.Printf("unable to close temp file: %v\n", err)
+			return
+		}
+
+		if err := app.Load(f.Name(), "audio/mp3", false); err != nil {
+			fmt.Printf("unable to load media to device: %v\n", err)
+			return
+		}
+
+		return
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(ttsCmd)
+	ttsCmd.Flags().String("google-service-account", "", "google service account JSON file")
+}

go.mod

@@ -1,26 +1,23 @@
 module github.com/vishen/go-chromecast
 
+go 1.12
+
 require (
-	github.com/buger/jsonparser v0.0.0-20180808090653-f4dd9f5a6b44
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/gogo/protobuf v1.1.1
-	github.com/hashicorp/go.net v0.0.0-20151006203346-104dcad90073 // indirect
-	github.com/hashicorp/mdns v0.0.0-20170221172940-4e527d9d8081
+	cloud.google.com/go v0.37.2
+	github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23
+	github.com/gogo/protobuf v1.2.1
+	github.com/hashicorp/mdns v1.0.0
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jroimartin/gocui v0.4.0
 	github.com/mattn/go-runewidth v0.0.4 // indirect
-	github.com/miekg/dns v1.0.8 // indirect
-	github.com/mitchellh/go-homedir v1.0.0
-	github.com/nsf/termbox-go v0.0.0-20181027232701-60ab7e3d12ed // indirect
-	github.com/onsi/ginkgo v1.7.0 // indirect
-	github.com/onsi/gomega v1.4.3 // indirect
-	github.com/pkg/errors v0.8.0
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/sirupsen/logrus v1.0.6
+	github.com/mitchellh/go-homedir v1.1.0
+	github.com/nsf/termbox-go v0.0.0-20190121233118-02980233997d // indirect
+	github.com/pkg/errors v0.8.1
+	github.com/sirupsen/logrus v1.4.0
 	github.com/spf13/cobra v0.0.3
-	github.com/spf13/pflag v1.0.2 // indirect
-	github.com/stretchr/testify v1.2.2 // indirect
-	golang.org/x/crypto v0.0.0-20180820150726-614d502a4dac // indirect
-	gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect
-	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
+	github.com/spf13/pflag v1.0.3 // indirect
+	google.golang.org/api v0.3.0
+	google.golang.org/genproto v0.0.0-20190321212433-e79c0c59cdb5
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	gopkg.in/yaml.v2 v2.2.2 // indirect
 )