Support and General Use > Audio Playback, Database and Playlists
Sponsoring a feature? (Support for HiRes-Audio, 24/96 or 24/192)
ElEsido:
Hi all
The request for support for high res audio without downsampling/bit truncating has kept coming up at regular intervals. However for various reasons this appears to be a low priority for the people with the technical knowledge and programming skills to actually do it.
Would anyone be willing to implement support for 24/96 (or higher) audio if he/she were sponsored for it or if a donation to rockbox were made?
I personally would be glad to throw up some $ if my H120 could send real 24/96 through the optical out. I'm confident that others would donate as well, but before opening threads in hifi-forums to look for other sponsors I wanted to check here if someone would dedicate some time and energy.
Best
ElEsido
torne:
Paying specific developers to implement certain features is probably frowned upon somewhat; we are all standing on each others' shoulders, it's not entirely fair to chuck money at the most recent person to touch a particular bit of code because that happened to be the change that made something you want work :)
Promising to donate is also unlikely to motivate people particularly, to be honest. Your best bet really is just to look for someone who can code who actually thinks it's a worthwhile feature.
seani:
It might also be worth pointing out that there's nothing to stop you from engaging whoever you like, and paying them whatever you like to grab the source from SVN and build you a version with exactly the features that you want.
But you might want to consider that even if you want to feed those changes back to the trunk, they aren't guaranteed to be accepted.
So if you need to take advantage of further features / bugfixes upstream, you might be faced with reapplying / rewriting the changes you've already arranged.
GodEater:
See this page in the wiki, and specifically the bit at the bottom for how we feel about bounties : http://www.rockbox.org/wiki/DonatedMoney
saratoga:
--- Quote from: ElEsido on December 28, 2009, 07:53:32 AM ---I personally would be glad to throw up some $ if my H120 could send real 24/96 through the optical out. I'm confident that others would donate as well, but before opening threads in hifi-forums to look for other sponsors I wanted to check here if someone would dedicate some time and energy.
--- End quote ---
I *think* we can do 20 bit via the optical out already. Rockbox itself does all audio processing in full 32 bit precision, so its just a matter of the optical out hardware supporting >16 bit. Though I'm not 100% sure, I don't have an H1x0.
For what its worth, lack of interesting in implementing 96k is largely due to it not being very desirable for an MP3 player. 96khz is very mildly useful for recording, mixing and editing, but for playback via optical is just a marketing gimmick, and one that would significantly reduce battery life at that.
--- Quote from: seani on December 30, 2009, 09:18:24 AM ---But you might want to consider that even if you want to feed those changes back to the trunk, they aren't guaranteed to be accepted.
--- End quote ---
Unless very poorly implemented, I think people would be interested in seeing this code. Although you're right getting it accepted would mean that it would have to have minimal impact on performance in the typical 44.1kHz case, which could be difficult. I'm not sure how flexible the PCM and DSP code is about sampling rate.
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