As I did not find a small implementation for reading mp3 ID3 tags, I wrote it myself. The code is thought as a sample for own customising. It can be compiled for an AVR and a Unix PC. Compiled for an AVR, it needs 1,3KB flash. Please note, that functions similar as the Unix functions fread and fseek are required in order to use the code. Features: Supports: Versions: ID3 V1.0 ID3 V2.2 ID3 V2.3 ID3 V2.4 Formats: ISO-8859-1 UTF-16 with BOM UTF-16 without BOM Partly supports: Flags: Jumps over external header Formats: UTF-8 is handled as ISO-8859-1 Not supports: Umlauts will be removed Unsynchronisation Extended Tag in ID3 V1.x Feedback and questions are welcome, especially if you found an (legally downloadable) mp3 which contains ID3 tags and can't be parsed with my source. (Natürlich können Fragen und Anmerkungen auch in Deutsch gestellt werden).
Hey Malte, cool stuff, that was exactly what I searched. Especially ID3v2 is not that simple, but if your code works it's great! Thanks a lot.
I missed umlauts. The output function now produce ISO_8859-1 instead of ASCII. If the ID3 is encoded as UTF-8 and the chars can be represented in ISO_8859-1, its converted to properly.
Gast
#1726503
What is the "calcultate framsize" part used for? I don't get its sense...
Each Frame has a variable size of its data. So the lenght/size is encoded in the Head of each Frame. See http://www.id3.org/id3v2.3.0#head-1a37d4a15deafc294208ccfde950f77e47000bca I hope, this helps.
Gast
#1727109
thx, malte. having read the spec the thing is much clearer.