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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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6
src/pulsecore/source-output.c
View file

@ -414,7 +414,8 @@ int pa_source_output_new(
((data->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(core->disable_remixing || (data->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(core->remixing_use_all_sink_channels ? 0 : PA_RESAMPLER_NO_FILL_SINK) |
(core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0)))) {
(core->remixing_produce_lfe ? PA_RESAMPLER_PRODUCE_LFE : 0) |
(core->remixing_consume_lfe ? PA_RESAMPLER_CONSUME_LFE : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
@ -1755,7 +1756,8 @@ int pa_source_output_update_resampler(pa_source_output *o) {
((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(o->core->remixing_use_all_sink_channels ? 0 : PA_RESAMPLER_NO_FILL_SINK) |
(o->core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0));
(o->core->remixing_produce_lfe ? PA_RESAMPLER_PRODUCE_LFE : 0) |
(o->core->remixing_consume_lfe ? PA_RESAMPLER_CONSUME_LFE : 0));
if (!new_resampler) {
pa_log_warn("Unsupported resampling operation.");