Single metadata interface?

[azul3d-bot]

Issue by slimsag
Wednesday Oct 01, 2014 at 19:10 GMT
Originally opened as azul3d-legacy/audio#7

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I do not know for sure yet, but I imagine most audio files share similar metadata that we could provide a single interface to within the audio package.

[azul3d-bot]

Comment by mdlayher
Wednesday Oct 01, 2014 at 19:38 GMT

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I actually was going to request this feature, if you mean metadata in the form of tags, sample rate, bitrate, etc.

I actually did some work on a native Go tagging package, and I'd be happy to contribute what I've learned! https://github.com/mdlayher/taggolib

[azul3d-bot]

Comment by slimsag
Wednesday Oct 01, 2014 at 21:54 GMT

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I actually was going to request this feature, if you mean metadata in the form of tags, sample rate, bitrate, etc.

This issue would be just about metadata tags (i.e. author, title, track number, etc).

For bitrate I've made #8.

For sample rate and number of channels you can just look at the decoder's configuration:

dec, _, err := audio.NewDecoder(r)
handle(err)

conf := dec.Config()
fmt.Println("Sample Rate: %d Channels: %d\n", conf.SampleRate, conf.Channels)

[azul3d-bot]

Comment by mdlayher
Wednesday Oct 01, 2014 at 22:01 GMT

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Cool! Yeah, metadata tags would be perfect. Vorbis tags, at least, are very easy to parse. ID3 is a lot less sane.