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Split the enable-lfe-remixing setting into two

Browse source 
remixing-produce-lfe controls upmixing, and remixing-consume-lfe
controls downmixing. The motivation is that a user might want to
synthesize LFE while playing stereo audio on his/her 5.1 speakers,
but at the same time follow the industry recommendation to omit
the LFE channel when producting a stereo downmix (e.g. for headphones)
from 5.1 content. Or the other way round.

Fixes: #753.
This commit is contained in:
Alexander Patrakov 2019-12-10 06:50:59 +00:00 • committed by Georg Chini
parent b94dba9daf
commit 464828faf2
12 changed files with 101 additions and 26 deletions
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4
src/pulsecore/resampler.c
View file

@ -1099,7 +1099,7 @@ static void setup_remap(const pa_resampler *r, pa_remap_t *m, bool *lfe_remixed)
* right input channel. Something is really wrong in this
* case anyway. */
} else if (on_lfe(b) && !(r->flags & PA_RESAMPLER_NO_LFE)) {
} else if (on_lfe(b) && (r->flags & PA_RESAMPLER_PRODUCE_LFE)) {
/* We are not connected and an LFE. Let's average all
* channels for LFE. */
@ -1150,7 +1150,7 @@ static void setup_remap(const pa_resampler *r, pa_remap_t *m, bool *lfe_remixed)
m->map_table_f[oc][ic] = (1.f/9.f) / (float) ic_unconnected_center;
ic_unconnected_center_mixed_in = true;
} else if (on_lfe(a) && !(r->flags & PA_RESAMPLER_NO_LFE))
} else if (on_lfe(a) && (r->flags & PA_RESAMPLER_CONSUME_LFE))
m->map_table_f[oc][ic] = .375f / (float) ic_unconnected_lfe;
}
}