Parsing audio_id from TAF file

pepe · February 17, 2024, 9:43am

I’m trying to script the creation of at least parts of tonies.custom.json. I found the SHA in the header, but not the audio ID. According to the proto/toniebox.pb.taf-header.proto it should be contained, but I can’t find it. What am I missing?

What I did:

selecting an existing Tonie in teddycloud
get the audio_id from the details view
check in tonies.json if the audio_id is the audio_id found in the json
Convert the audio ID to hex representation
Search for those bytes in hexdump of the head of the corresponding TAF file

Off topic: When creating custom tonies, can I set the modelId to any string?

Wurst420 · February 17, 2024, 9:57am

The audio ID is the timestamp:

Is this what you wanted to know? If not, sorry, than I didn’t get your question (lack of Wurst english skills).

pepe · February 17, 2024, 10:24am

I’m aware that’s the audio ID. I don’t want to copy&paste 100 audio IDs from the GUI to manually edit a json file, but want to read that value from the TAF file.

To help understand my problem:
Ich möchte (u.A.) die audio_id aus dem TAF file per Skript auslesen, um mir eine größere tonies.custom.json zusammen zu bauen. Um bei deinem Beispiel zu bleiben: Ich finde “Hash” im TAF file, aber nicht 1705863575. Ich suche im hexdump des headers nach 0x65AD6997 (die hex Repräsentation der audio id) und finde nichts, auch nicht in anderer Reihenfolge. Dem Quelltext der Teddycloud entnehme ich, dass die audio_id eigentlich im Header enthalten sein müsste. Und von irgendwo muss die ja kommen. Jetzt suche ich Rat

0xbadbee · February 17, 2024, 10:43am

github.com

toniebox-reverse-engineering/teddycloud/blob/master/proto/toniebox.pb.taf-header.proto

syntax = "proto2";

message TonieboxAudioFileHeader {
  required bytes sha1_hash = 1;
  required uint64 num_bytes = 2;
  required uint32 audio_id = 3;
  repeated uint32 track_page_nums = 4 [packed=true];
  required bytes _fill = 5;
}

You’ll need to parse the header with protobuf.

0xbadbee · February 17, 2024, 10:44am

It just has to be unique

pepe · February 17, 2024, 10:53am

Isn’t protobuf just a tool that helps parsing stuff? If not I now know why I have a feeling that I’m missing something

pepe · February 17, 2024, 11:01am

Okay got it, I really misinterpreted what protobuf is doing. Even found part of what I need in opus2tonie, so I can recycle that.