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channelmix: make up/downmix levels configurable

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Add channelmix.center-level, channelmix.surround-level and
channelmix.lfe-level to control how center, surround and LFE is
up/downmixed.

Fixes #5198
This commit is contained in:
Wim Taymans 2026-03-30 17:50:48 +02:00
parent 03f894bab0
commit 18c97222c4
12 changed files with 119 additions and 25 deletions
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7
spa/plugins/audioconvert/test-audioconvert.c
View file

@ -54,7 +54,7 @@ static int setup_context(struct context *ctx)
size_t size;
int res;
struct spa_support support[1];
struct spa_dict_item items[6];
struct spa_dict_item items[9];
const struct spa_handle_factory *factory;
void *iface;
@ -76,10 +76,13 @@ static int setup_context(struct context *ctx)
items[3] = SPA_DICT_ITEM_INIT("channelmix.lfe-cutoff", "150");
items[4] = SPA_DICT_ITEM_INIT("channelmix.fc-cutoff", "12000");
items[5] = SPA_DICT_ITEM_INIT("channelmix.rear-delay", "12.0");
items[6] = SPA_DICT_ITEM_INIT("channelmix.center-level", "0.707106781");
items[7] = SPA_DICT_ITEM_INIT("channelmix.surround-level", "0.707106781");
items[8] = SPA_DICT_ITEM_INIT("channelmix.lfe-level", "0.5");
res = spa_handle_factory_init(factory,
ctx->convert_handle,
&SPA_DICT_INIT(items, 6),
&SPA_DICT_INIT(items, 9),
support, 1);
spa_assert_se(res >= 0);