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channelmix: Prepare for generating LFE channel

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Add channelmix.lfe-cutoff property, 0 is disabled
Disable upmix by default
This commit is contained in:
Wim Taymans 2021-03-17 11:09:19 +01:00
parent 4200ca98d6
commit e51cc5b537
7 changed files with 27 additions and 20 deletions
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3
spa/plugins/audioconvert/channelmix-ops.c
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@ -385,8 +385,7 @@ static int make_matrix(struct channelmix *mix)
spa_log_warn(mix->log, "can't produce FC");
}
}
if (unassigned & _MASK(LFE) &&
SPA_FLAG_IS_SET(mix->options, CHANNELMIX_OPTION_FILTER_LFE)) {
if (unassigned & _MASK(LFE) && mix->lfe_cutoff > 0.0f) {
if ((src_mask & STEREO) == STEREO) {
spa_log_debug(mix->log, "produce LFE from STEREO");
matrix[LFE][FL] += llev;