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export pa_channel_map_superset()

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This commit is contained in:
Lennart Poettering 2009-01-20 21:00:35 +01:00
parent 7368a6e6be
commit 04e9214065
4 changed files with 24 additions and 20 deletions
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19
src/pulse/channelmap.c
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@ -577,3 +577,22 @@ int pa_channel_map_compatible(const pa_channel_map *map, const pa_sample_spec *s
return map->channels == ss->channels;
}
int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) {
pa_bool_t in_a[PA_CHANNEL_POSITION_MAX];
unsigned i;
pa_assert(a);
pa_assert(b);
memset(in_a, 0, sizeof(in_a));
for (i = 0; i < a->channels; i++)
in_a[a->map[i]] = TRUE;
for (i = 0; i < b->channels; i++)
if (!in_a[b->map[i]])
return 0;
return 1;
}