wip: add transition (I do not know)

config/config.go

@@ -24,6 +24,8 @@ const (
 	Stage
 )
 
+var conf *ShottowerConfig
+
 func (s EndpointType) String() string {
 	switch s {
 	case V1:
@@ -48,11 +50,25 @@ type ShottowerConfig struct {
 	endpointType EndpointType
 }
 
-func NewShottowerConfig(baseURL string, endpointType EndpointType) ShottowerConfiguration {
-	return &ShottowerConfig{
+func Init(baseURL string, endpointType EndpointType) error {
+
+	// viper.SetConfigName("config")
+
+	// https://github.com/TakasBU/TakasBU/blob/main/initializers/loadEnv.go
+	// https://github.com/laixhe/goimg/blob/c27cdb95bdf9b09f36589c2d465c7a6ebdd44b92/config/config.go
+	// https://github.com/Bikram-Gyawali/LearningGoLang/blob/17f5c3a1048f4857e31652d3a139253be68ec9a9/day24_viper/utils/config.go
+	// https://articles.wesionary.team/environment-variable-configuration-in-your-golang-project-using-viper-4e8289ef664d
+
+	conf = &ShottowerConfig{
 		rootURL:      baseURL,
 		endpointType: endpointType,
 	}
+
+	return nil
+}
+
+func Get() *ShottowerConfig {
+	return conf
 }
 
 func (s *ShottowerConfig) GetRootURL() string {

go/ffmpeg.go

@@ -642,6 +642,12 @@ func (s *FFMPEG) toStringHandleSource(parameters []string) []string {
 		parameters = append(parameters, s.GenerateFiller("[email protected]"))
 	}
 
+	// Add transparent source for transition
+	parameters = append(parameters, "-f")
+	parameters = append(parameters, "lavfi")
+	parameters = append(parameters, "-i")
+	parameters = append(parameters, s.GenerateFiller("[email protected]"))
+
 	// Add background source
 	parameters = append(parameters, "-f")
 	parameters = append(parameters, "lavfi")
@@ -689,6 +695,11 @@ func (s *FFMPEG) ToString() []string {
 				"[" + cast.ToString(maxSource+addedSources) + "] concat=n=1:v=1,setpts=PTS-STARTPTS,format=yuva420p [overfiller" + cast.ToString(i) + "];"
 		}
 	}
+
+	// Add transition stream
+	addedSources = addedSources + 1
+	filterComplex = filterComplex + "[" + cast.ToString(maxSource+addedSources) + "] concat=n=1:v=1,setpts=PTS-STARTPTS,format=yuv420p [transition0]; [transition0] trim=start=0:end=" + cast.ToString(s.duration) + " [transition];"
+
 	// Add background stream
 	addedSources = addedSources + 1
 	filterComplex = filterComplex + "[" + cast.ToString(maxSource+addedSources) + "] concat=n=1:v=1,setpts=PTS-STARTPTS,format=yuv420p [bg0]; [bg0] trim=start=0:end=" + cast.ToString(s.duration) + " [bg];"

go/ffmpeg_test.go

@@ -293,4 +293,24 @@ var _ = Describe("Ffmpeg", func() {
 			Expect(res).To(Equal("subtitles='/dev/test.mkv':stream_index=0[strack0c0]; [0:v] [strack0c0] overlay [vtrack0c0];"))
 		})
 	})
+	XDescribe("CloseTrack", func() {
+		var ff openapi.FFMPEGCommand
+		BeforeEach(func() {
+			ff = openapi.NewFFMPEGCommand()
+			_ = ff.AddSource("/dev/test.mkv", false)
+		})
+
+		It("Should merge subtitle track with video", func() {
+			// var sourceClip = 0
+			var trackNumber = 0
+			// var clipNumber = 0
+			// var index = 0
+			_ = ff.AddTrack(trackNumber)
+			_ = ff.AddClip(trackNumber, "[0] concat=n=1:v=1,setpts=PTS-STARTPTS,format=yuva420p [filler1];")
+			_ = ff.AddClip(trackNumber, "[1] concat=n=1:v=1,setpts=PTS-STARTPTS,format=yuva420p [filler2];")
+			_ = ff.CloseTrack(trackNumber)
+			res := ff.ToString()
+			Expect(res).To(BeNil())
+		})
+	})
 })

go/model_clip.go

@@ -211,6 +211,14 @@ func (s *Clip) ToFFMPEG(FFMPEGCommand FFMPEGCommand, sourceClip int, trackNumber
 		effects = append(effects, FFMPEGCommand.ClipResize(sourceClip, trackNumber, currentClip, 1))
 	}
 
+	// Apply Transition between clip and transparent reference
+	if s.Transition != nil {
+		// Use the invisible source "transition" to make the effect based on the current clip and the transparent one
+		// start = invisible + clip
+		// end = clip + invisible
+		fmt.Println("here")
+	}
+
 	_ = FFMPEGCommand.AddClip(
 		trackNumber,
 		FFMPEGCommand.ClipMerge(sourceClip, trackNumber, currentClip, effects),

main.go

@@ -36,10 +36,16 @@ import (
 )
 
 func main() {
+	// TODO: Add test to main
+	// https://dev.to/techschoolguru/load-config-from-file-environment-variables-in-golang-with-viper-2j2d
 	log.Printf("Server started")
 
-	myConfig := config.NewShottowerConfig("http://0.0.0.0:4000", config.Stage)
+	// Find config file and load it!
+	// Use config
+	config.Init("http://0.0.0.0:4000", config.Stage)
+	myConfig := config.Get()
 
+	// TODO: Replace myConfig with call to config Package
 	EditAPIService := openapi.NewEditAPIService(myConfig)
 	EditAPIController := openapi.NewEditAPIController(EditAPIService)
 
@@ -64,4 +70,6 @@ func main() {
 		IdleTimeout:  time.Second * 60,
 	}
 	log.Fatal(server.ListenAndServe())
+	// TODO: Add graceful shutdown
+	// https://github.com/miomiora/mio-init/blob/master/main.go
 }