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Comment by gman83 | Hacker News Reader

What's the advantage of using cpal over something like libmpv?

they're at different layers. libmpv is a full media player: demuxing, decoding (via FFmpeg), DSP, output. cpal is just a thin cross-platform PCM sink on top of CoreAudio/ALSA/WASAPI/etc.

Rockbox already brings its own decoders (20+ codecs), its own DSP chain (crossfeed, EQ, replaygain, gapless), and its own mixer. I just need the host OS to accept PCM frames. cpal is the minimal portable shim for that; pulling in libmpv would mean discarding Rockbox's audio pipeline and replacing it with FFmpeg's, which would basically defeat the point of building on Rockbox firmware.

>which would basically defeat the point of building on Rockbox firmware.

What is the point of bulding on Rockbox firmware? I love Rockbox myself too so the answer can be "fun" and that is all right.

Honestly, mostly for fun and love of Rockbox, I've wanted it on my desktop since 2010 and nobody else was going to build it :) That said, Rockbox does bring real things: a battle-tested DSP chain (crossfeed, EQ, replaygain, dithering), gapless playback that actually works everywhere, codec coverage most players have given up on (Musepack, WavPack, ...). It's a lot of mature work to throw away.

Thanks for the reply! I hope the question didn't come off as snarky... I find music players, as a genre of software if you may me, fascinating. Since there is always a new one around the corner... Remember XMMS2!? And people still use Winamp 2.xx... It is fun to always see new takes on this problem. I will give it a whirl!

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