still flickering

go.mod

@@ -4,9 +4,11 @@ go 1.12
 
 require (
 	github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59 // indirect
+	github.com/gizak/termui/v3 v3.1.0
 	github.com/lugu/qiloop v0.0.0-20190812164856-2530e8468e8d
 	github.com/mattn/go-isatty v0.0.9 // indirect
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
 	github.com/qeesung/image2ascii v1.0.1
+	github.com/stretchr/testify v1.4.0 // indirect
 	github.com/wayneashleyberry/terminal-dimensions v1.0.0 // indirect
 )

go.sum

@@ -4,9 +4,13 @@ github.com/cheekybits/genny v1.0.0 h1:uGGa4nei+j20rOSeDeP5Of12XVm7TGUd4dJA9RDitf
 github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
 github.com/dave/jennifer v1.3.0 h1:p3tl41zjjCZTNBytMwrUuiAnherNUZktlhPTKoF/sEk=
 github.com/dave/jennifer v1.3.0/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/denisbrodbeck/machineid v1.0.1 h1:geKr9qtkB876mXguW2X6TU4ZynleN6ezuMSRhl4D7AQ=
 github.com/denisbrodbeck/machineid v1.0.1/go.mod h1:dJUwb7PTidGDeYyUBmXZ2GphQBbjJCrnectwCyxcUSI=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/gizak/termui/v3 v3.1.0 h1:ZZmVDgwHl7gR7elfKf1xc4IudXZ5qqfDh4wExk4Iajc=
+github.com/gizak/termui/v3 v3.1.0/go.mod h1:bXQEBkJpzxUAKf0+xq9MSWAvWZlE7c+aidmyFlkYTrY=
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -28,17 +32,29 @@ github.com/marten-seemann/qtls v0.3.2/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwm
 github.com/mattes/go-asciibot v0.0.0-20190603170252-3fa6d766c482/go.mod h1:akTvhl4803od3DOIWgnTKgOJx3Pevvt7BU9pRrKdRVA=
 github.com/mattn/go-isatty v0.0.9 h1:d5US/mDsogSGW37IV293h//ZFaeajb69h+EHFsv2xGg=
 github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2yME+cCiQ=
+github.com/mattn/go-runewidth v0.0.2 h1:UnlwIPBGaTZfPQ6T1IGzPI0EkYAQmT9fAEJ/poFC63o=
+github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
+github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 h1:DpOJ2HYzCv8LZP15IdmG+YdwD2luVPHITV96TkirNBM=
+github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
+github.com/nsf/termbox-go v0.0.0-20190121233118-02980233997d h1:x3S6kxmy49zXVVyhcnrFqxvNVCBPb2KZ9hV2RBdS840=
+github.com/nsf/termbox-go v0.0.0-20190121233118-02980233997d/go.mod h1:IuKpRQcYE1Tfu+oAQqaLisqDeXgjyyltCfsaoYN18NQ=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.8.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.5.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prataprc/goparsec v0.0.0-20180806094145-2600a2a4a410 h1:BZjOxwDguSqFR+Uk9DSlT1SZ9jsDsNVdgoDmEuAhIew=
 github.com/prataprc/goparsec v0.0.0-20180806094145-2600a2a4a410/go.mod h1:YbpxZqbf10o5u96/iDpcfDQmbIOTX/iNCH/yBByTfaM=
 github.com/qeesung/image2ascii v1.0.1 h1:Fe5zTnX/v/qNC3OC4P/cfASOXS501Xyw2UUcgrLgtp4=
 github.com/qeesung/image2ascii v1.0.1/go.mod h1:kZKhyX0h2g/YXa/zdJR3JnLnJ8avHjZ3LrvEKSYyAyU=
+github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/wayneashleyberry/terminal-dimensions v1.0.0 h1:LawtS1nqKjAfqrmKOzkcrDLAjSzh38lEhC401JPjQVA=
 github.com/wayneashleyberry/terminal-dimensions v1.0.0/go.mod h1:PW2XrtV6KmKOPhuf7wbtcmw1/IFnC39mryRET2XbxeE=
 golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -70,4 +86,5 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

main.go

@@ -3,22 +3,22 @@ package main
 
 import (
 	"flag"
-	"fmt"
+	"io"
 	"log"
 	"os"
-	"os/signal"
 	"time"
 
 	"github.com/lugu/qiloop/app"
 	"github.com/lugu/qiloop/type/value"
+	"github.com/qeesung/image2ascii/convert"
 
 	"image"
 	"image/color"
 
 	_ "image/jpeg"
 	_ "image/png"
 
-	"github.com/qeesung/image2ascii/convert"
+	ui "github.com/gizak/termui/v3"
 )
 
 var (
@@ -67,7 +67,7 @@ const (
 	hsv  = 12
 	dist = 21
 
-	fps = 10
+	fps = 5
 )
 
 func printImage(img value.Value) {
@@ -84,15 +84,20 @@ func printImage(img value.Value) {
 	image.heigh = int(values[1].(value.IntValue).Value())
 	image.pixels = values[6].(value.RawValue).Value()
 
-	//log.Printf("camera resolution: %dx%d\n", image.width, image.heigh)
+	termWidth, termHeight := ui.TerminalDimensions()
 
 	convertOptions := convert.DefaultOptions
-	convertOptions.FixedWidth = 100
-	convertOptions.FixedHeight = 40
+	convertOptions.FixedWidth = termWidth
+	convertOptions.FixedHeight = termHeight
 
 	// Create the image converter
 	converter := convert.NewImageConverter()
-	fmt.Print(converter.Image2ASCIIString(&image, &convertOptions))
+	text := converter.Image2ASCIIString(&image, &convertOptions)
+
+	_, err := io.WriteString(os.Stdout, text)
+	if err != nil {
+		log.Printf("Failed to write image: %s", err)
+	}
 }
 
 func main() {
@@ -134,26 +139,34 @@ func main() {
 	// Configure the camera
 	id, err := videoDevice.SubscribeCamera(id, camera, qvga, rgb, fps)
 	if err != nil {
+		videoDevice.Unsubscribe(id)
 		log.Fatalf("failed to initialize camera: %s", err)
 	}
+	defer videoDevice.Unsubscribe(id)
 
-	interrupt := make(chan os.Signal, 1)
-	signal.Notify(interrupt, os.Interrupt)
+	if err := ui.Init(); err != nil {
+		log.Print(err)
+		return
+	}
+	defer ui.Close()
 
-	timer := time.NewTicker(100 * time.Millisecond)
+	timer := time.NewTicker((1000 / fps) * time.Millisecond)
+	uiEvents := ui.PollEvents()
 
 	for {
 		select {
-		case s := <-interrupt:
-			log.Printf("%v: quitting.", s)
-			ok, err := videoDevice.Unsubscribe(id)
-			if !ok || err != nil {
-				log.Fatalf("failed to unsubscribe: %s", err)
+		case e := <-uiEvents:
+			switch e.ID {
+			case "q", "<C-c>":
+				return
+			case "<Resize>":
+				ui.Clear()
 			}
-			return
 		case <-timer.C:
 			img, err := videoDevice.GetImageRemote(id)
 			if err != nil {
+				videoDevice.Unsubscribe(id)
+				ui.Close()
 				log.Fatalf("failed to retrieve image: %s", err)
 			}
 			printImage(img)