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replay_gain: reimplement as a filter plugin

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Apply the replay gain in the output thread.  This means a new setting
will be active instantly, without going through the whole music pipe.
And we might have different replay gain settings for each audio output
device.
This commit is contained in:
Max Kellermann
2010-02-14 17:04:39 +01:00
parent 5e0117b444
commit 752dfb3d95
18 changed files with 310 additions and 161 deletions
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11
src/output_init.c
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@@ -194,6 +194,17 @@ audio_output_init(struct audio_output *ao, const struct config_param *param,
ao->filter = filter_chain_new();
assert(ao->filter != NULL);
/* create the replay_gain filter */
ao->replay_gain_filter = filter_new(&replay_gain_filter_plugin,
param, NULL);
assert(ao->replay_gain_filter != NULL);
filter_chain_append(ao->filter, ao->replay_gain_filter);
ao->replay_gain_serial = 0;
/* create the normalization filter (if configured) */
if (config_get_bool(CONF_VOLUME_NORMALIZATION, false)) {
struct filter *normalize_filter =
filter_new(&normalize_filter_plugin, NULL, NULL);