// Try to decode morse messages and data frames.
// This should really be done asynchronously by the telemetry pipeline.
func DecodeBlobs(
satellite_id string, timestamp int64, blobs []pb.Contact_Blob) (
result []*pb.Contact_Blob, err error) {
var datums []pb.TelemetryDatum
var new_frames [][]byte
for _, b := range blobs {
if b.Format == nil {
log.Printf("Missing blob format.")
continue
}
if *b.Format == pb.Contact_Blob_FREEFORM {
d, f := telemetry.DecodeFreeform(
satellite_id, b.InlineData, timestamp)
datums = append(datums, d...)
new_frames = append(new_frames, f...)
} else if *b.Format == pb.Contact_Blob_MORSE {
d, _ := telemetry.DecodeMorse(
satellite_id,
(string)(b.InlineData),
timestamp)
datums = append(datums, d...)
} else if *b.Format == pb.Contact_Blob_FRAME {
d, _ := telemetry.DecodeFrame(
satellite_id, b.InlineData, timestamp)
datums = append(datums, d...)
} else {
log.Printf("Unknown blob format: %v", *b.Format)
return nil, NewPopulateContactError(
http.StatusBadRequest, "Unknown format.")
}
}
for _, f := range new_frames {
b := &pb.Contact_Blob{}
b.Format = pb.Contact_Blob_FRAME.Enum()
b.InlineData = []byte(f)
result = append(result, b)
}
for _, d := range datums {
b := &pb.Contact_Blob{}
b.Format = pb.Contact_Blob_DATUM.Enum()
b.Datum = &pb.TelemetryDatum{}
*b.Datum = d
result = append(result, b)
}
return result, nil
}
func decodeHexFrame(satellite_id, data string) {
frame, err := hex.DecodeString(data)
if err != nil {
fmt.Printf("Not a hex frame: %s\n", err.Error())
return
}
pl, err := telemetry.DecodeFrame(satellite_id, frame, 0)
if err != nil {
fmt.Printf("DecodeFrame error: %s\n", err.Error())
return
}
for _, p := range pl {
fmt.Printf("%s\n", proto.MarshalTextString(&p))
}
}