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Diffstat (limited to 'src/modules/alsa/alsa-mixer.c')
-rw-r--r--src/modules/alsa/alsa-mixer.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/src/modules/alsa/alsa-mixer.c b/src/modules/alsa/alsa-mixer.c
index 41997a79..3eef5f9c 100644
--- a/src/modules/alsa/alsa-mixer.c
+++ b/src/modules/alsa/alsa-mixer.c
@@ -2400,6 +2400,7 @@ int pa_alsa_path_probe(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t ignore_dB) {
pa_alsa_element *e;
double min_dB[PA_CHANNEL_POSITION_MAX], max_dB[PA_CHANNEL_POSITION_MAX];
pa_channel_position_t t;
+ pa_channel_position_mask_t path_volume_channels = 0;
pa_assert(p);
pa_assert(m);
@@ -2436,6 +2437,7 @@ int pa_alsa_path_probe(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t ignore_dB) {
if (PA_CHANNEL_POSITION_MASK(t) & e->merged_mask) {
min_dB[t] = e->min_dB;
max_dB[t] = e->max_dB;
+ path_volume_channels |= PA_CHANNEL_POSITION_MASK(t);
}
p->has_dB = TRUE;
@@ -2446,6 +2448,7 @@ int pa_alsa_path_probe(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t ignore_dB) {
if (PA_CHANNEL_POSITION_MASK(t) & e->merged_mask) {
min_dB[t] += e->min_dB;
max_dB[t] += e->max_dB;
+ path_volume_channels |= PA_CHANNEL_POSITION_MASK(t);
}
} else {
/* Hmm, there's another element before us
@@ -2484,11 +2487,13 @@ int pa_alsa_path_probe(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t ignore_dB) {
p->max_dB = -INFINITY;
for (t = 0; t < PA_CHANNEL_POSITION_MAX; t++) {
- if (p->min_dB > min_dB[t])
- p->min_dB = min_dB[t];
+ if (path_volume_channels & PA_CHANNEL_POSITION_MASK(t)) {
+ if (p->min_dB > min_dB[t])
+ p->min_dB = min_dB[t];
- if (p->max_dB < max_dB[t])
- p->max_dB = max_dB[t];
+ if (p->max_dB < max_dB[t])
+ p->max_dB = max_dB[t];
+ }
}
return 0;