1 files changed, 19 insertions, 0 deletions
diff --git a/src/audio_format.c b/src/audio_format.c
index 799e0dd8..458ec3b1 100644
--- a/src/audio_format.c
+++ b/src/audio_format.c
@@ -28,6 +28,25 @@
 #define REVERSE_ENDIAN_SUFFIX "_be"
 #endif
 
+void
+audio_format_mask_apply(struct audio_format *af,
+			const struct audio_format *mask)
+{
+	assert(audio_format_valid(af));
+	assert(audio_format_mask_valid(mask));
+
+	if (mask->sample_rate != 0)
+		af->sample_rate = mask->sample_rate;
+
+	if (mask->format != SAMPLE_FORMAT_UNDEFINED)
+		af->format = mask->format;
+
+	if (mask->channels != 0)
+		af->channels = mask->channels;
+
+	assert(audio_format_valid(af));
+}
+
 const char *
 sample_format_to_string(enum sample_format format)
 {