Rockbox mail archiveSubject: Re: Opus codec developments
Re: Opus codec developments
From: RafaŽl Carrť <funman_at_videolan.org>
Date: Fri, 27 Jul 2012 18:00:41 +0200
Le 2012-07-27 15:32, Magnus Holmgren a ťcrit :
> On 2012-07-27 15:24, Bertrik Sikken wrote:
>>>> * Applying global gain from the opus audio file is not implemented
>>>> (not sure if replaygain is working)
>>> Fixed (it's part of the codec, not related to replaygain although we
>>> might want to implement replaygain for e.g. vorbis too).
>> (Replaygain for vorbis/upus doesn't look that complicated really, BTW).
> A call to codec_set_replaygain() when starting a new track should be enough. It
> looks like the existing tag parsing code is used; if so Replaygain tags are
> already handled.
I think the tags are not read at all from the file:
git grep \"REPLAYGAIN shows no result
> By the way, how is resampling handled? From what I've read, Opus always uses 48
> kHz internally, so what resampler is used? The one in Opus or the one in Rockbox?
sample_rate = 48000;
opus_decoder_init(st, sample_rate, header.channels);
So it seems rockbox asks for 48kHz and then resamples it itself, we
could compare both maybe.
Did someone run test_codec yet? saratoga?
Received on 2012-07-27