v210A flowdef

internal/flowdef/flowdef.go

@@ -12,6 +12,7 @@ const (
 	FormatVideo      = "urn:x-nmos:format:video"
 	FormatAudio      = "urn:x-nmos:format:audio"
 	MediaTypeV210    = "video/v210"
+	MediaTypeV210A   = "video/v210a"
 	MediaTypeFloat32 = "audio/float32"
 
 	InterlaceProgressive = "progressive"
@@ -75,7 +76,12 @@ type VideoComponent struct {
 	BitDepth uint   `json:"bit_depth"`
 }
 
-func NewV210Video(id string, width, height uint, rate Rational) (Video, error) {
+func newVideo(
+	id string,
+	width, height uint,
+	rate Rational,
+	mediaType string,
+) (Video, error) {
 	definition := Video{
 		Common: Common{
 			Description: "go-mxl-pattern-gen generated video",
@@ -86,7 +92,7 @@ func NewV210Video(id string, width, height uint, rate Rational) (Video, error) {
 			Format:    FormatVideo,
 			Label:     "go-mxl-pattern-gen generated video",
 			Parents:   []string{},
-			MediaType: MediaTypeV210,
+			MediaType: mediaType,
 		},
 		GrainRate:     rate,
 		FrameWidth:    width,
@@ -105,7 +111,15 @@ func NewV210Video(id string, width, height uint, rate Rational) (Video, error) {
 	return definition, nil
 }
 
-func ParseV210Video(data []byte) (Video, error) {
+func NewV210Video(id string, width, height uint, rate Rational) (Video, error) {
+	return newVideo(id, width, height, rate, MediaTypeV210)
+}
+
+func NewV210AVideo(id string, width, height uint, rate Rational) (Video, error) {
+	return newVideo(id, width, height, rate, MediaTypeV210A)
+}
+
+func ParseVideo(data []byte) (Video, error) {
 	var definition Video
 	if err := json.Unmarshal(data, &definition); err != nil {
 		return Video{}, fmt.Errorf("decode video flow definition: %w", err)
@@ -123,8 +137,10 @@ func (v Video) Validate() error {
 	if v.Format != FormatVideo {
 		return fmt.Errorf("format must be %q, got %q", FormatVideo, v.Format)
 	}
-	if v.MediaType != MediaTypeV210 {
-		return fmt.Errorf("media_type must be %q, got %q", MediaTypeV210, v.MediaType)
+	switch v.MediaType {
+	case MediaTypeV210, MediaTypeV210A:
+	default:
+		return fmt.Errorf("media_type must be %q or %q, got %q", MediaTypeV210, MediaTypeV210A, v.MediaType)
 	}
 	if v.InterlaceMode != InterlaceProgressive {
 		return fmt.Errorf("interlace_mode must be %q, got %q", InterlaceProgressive, v.InterlaceMode)