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-rw-r--r--src/pulsecore/sink.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c
index 839b7d44..345d090c 100644
--- a/src/pulsecore/sink.c
+++ b/src/pulsecore/sink.c
@@ -35,6 +35,7 @@
#include <pulse/util.h>
#include <pulse/i18n.h>
#include <pulse/rtclock.h>
+#include <pulse/internal.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/namereg.h>
@@ -177,6 +178,7 @@ static void reset_callbacks(pa_sink *s) {
s->request_rewind = NULL;
s->update_requested_latency = NULL;
s->set_port = NULL;
+ s->get_formats = NULL;
}
/* Called from main context */
@@ -3258,3 +3260,52 @@ static void pa_sink_volume_change_rewind(pa_sink *s, size_t nbytes) {
}
pa_sink_volume_change_apply(s, NULL);
}
+
+/* Called from the main thread */
+/* Gets the list of formats supported by the sink. The members and idxset must
+ * be freed by the caller. */
+pa_idxset* pa_sink_get_formats(pa_sink *s) {
+ pa_idxset *ret;
+
+ pa_assert(s);
+
+ if (s->get_formats) {
+ /* Sink supports format query, all is good */
+ ret = s->get_formats(s);
+ } else {
+ /* Sink doesn't support format query, so assume it does PCM */
+ pa_format_info *f = pa_format_info_new();
+ f->encoding = PA_ENCODING_PCM;
+
+ ret = pa_idxset_new(NULL, NULL);
+ pa_idxset_put(ret, f, NULL);
+ }
+
+ return ret;
+}
+
+/* Called from the main thread */
+/* Calculates the intersection between formats supported by the sink and
+ * in_formats, and returns these, in the order of the sink's formats. */
+pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats) {
+ pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *sink_formats;
+ pa_format_info *f_sink, *f_in;
+ uint32_t i, j;
+
+ pa_assert(s);
+
+ if (!in_formats || pa_idxset_isempty(in_formats))
+ goto done;
+
+ sink_formats = pa_sink_get_formats(s);
+
+ PA_IDXSET_FOREACH(f_sink, sink_formats, i) {
+ PA_IDXSET_FOREACH(f_in, in_formats, j) {
+ if (pa_format_info_is_compatible(f_sink, f_in))
+ pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
+ }
+ }
+
+done:
+ return out_formats;
+}