app run in app.go

cmd/mxl-pattern/main.go

@@ -5,7 +5,6 @@ package main
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"log"
@@ -26,8 +25,8 @@ import (
 )
 
 const (
-	APP_NAME = "MXL pattern generator"
-	APP_VER  = "0.1.0"
+	APP_NAME = app.Name
+	APP_VER  = app.Version
 )
 
 type appArgs struct {
@@ -424,7 +423,7 @@ func main() {
 	}
 }
 
-func run(ctx context.Context, args appArgs) (runErr error) {
+func run(ctx context.Context, args appArgs) error {
 	videoCfg, err := buildVideoConfig(args)
 	if err != nil {
 		return fmt.Errorf("video configuration: %w", err)
@@ -434,43 +433,9 @@ func run(ctx context.Context, args appArgs) (runErr error) {
 		return fmt.Errorf("audio configuration: %w", err)
 	}
 
-	log.Printf("%s %s", APP_NAME, APP_VER)
-	log.Printf("Domain: %s", args.domain)
-	log.Printf("Video: %dx%d %d/%d",
-		videoCfg.Width(), videoCfg.Height(), videoCfg.Rate().Num, videoCfg.Rate().Den)
-	log.Printf("Video ID: %s", videoCfg.ID())
-	if audioCfg != nil {
-		log.Printf("Audio: %d channels %d/%d Hz %.0f dBFS",
-			audioCfg.Channels(), audioCfg.Rate().Num, audioCfg.Rate().Den, audioCfg.LevelDBFS)
-		log.Printf("Audio ID: %s", audioCfg.ID())
-	}
-
-	inst, err := mxl.NewInstance(args.domain, "")
-	if err != nil {
-		return fmt.Errorf("initialize MXL domain %q: %w", args.domain, err)
-	}
-	defer func() {
-		if err := inst.Close(); err != nil {
-			runErr = errors.Join(runErr, fmt.Errorf("close MXL instance: %w", err))
-		}
-	}()
-
-	runners := []app.Runner{
-		{
-			Name: "video",
-			Run: func(ctx context.Context) error {
-				return video.Run(ctx, inst, videoCfg)
-			},
-		},
-	}
-	if audioCfg != nil {
-		runners = append(runners, app.Runner{
-			Name: "audio",
-			Run: func(ctx context.Context) error {
-				return audio.Run(ctx, inst, *audioCfg)
-			},
-		})
-	}
-
-	return app.RunConcurrent(ctx, runners...)
+	return app.Run(ctx, app.Config{
+		Domain: args.domain,
+		Video:  videoCfg,
+		Audio:  audioCfg,
+	})
 }

internal/app/app.go

@@ -0,0 +1,66 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+
+	"mxl-pattern-generator/internal/audio"
+	"mxl-pattern-generator/internal/video"
+
+	"github.com/qvest-digital/go-mxl/mxl"
+)
+
+const (
+	Name    = "MXL pattern generator"
+	Version = "0.1.0"
+)
+
+type Config struct {
+	Domain string
+	Video  video.Config
+	Audio  *audio.Config
+}
+
+func Run(ctx context.Context, cfg Config) (runErr error) {
+	log.Printf("%s %s", Name, Version)
+	log.Printf("Domain: %s", cfg.Domain)
+	log.Printf("Video: %dx%d %d/%d",
+		cfg.Video.Width(), cfg.Video.Height(), cfg.Video.Rate().Num, cfg.Video.Rate().Den)
+	log.Printf("Video ID: %s", cfg.Video.ID())
+	if cfg.Audio != nil {
+		log.Printf("Audio: %d channels %d/%d Hz %.0f dBFS",
+			cfg.Audio.Channels(), cfg.Audio.Rate().Num, cfg.Audio.Rate().Den, cfg.Audio.LevelDBFS)
+		log.Printf("Audio ID: %s", cfg.Audio.ID())
+	}
+
+	inst, err := mxl.NewInstance(cfg.Domain, "")
+	if err != nil {
+		return fmt.Errorf("initialize MXL domain %q: %w", cfg.Domain, err)
+	}
+	defer func() {
+		if err := inst.Close(); err != nil {
+			runErr = errors.Join(runErr, fmt.Errorf("close MXL instance: %w", err))
+		}
+	}()
+
+	runners := []Runner{
+		{
+			Name: "video",
+			Run: func(ctx context.Context) error {
+				return video.Run(ctx, inst, cfg.Video)
+			},
+		},
+	}
+	if cfg.Audio != nil {
+		runners = append(runners, Runner{
+			Name: "audio",
+			Run: func(ctx context.Context) error {
+				return audio.Run(ctx, inst, *cfg.Audio)
+			},
+		})
+	}
+
+	return RunConcurrent(ctx, runners...)
+}