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-rw-r--r--src/crossfade.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/crossfade.c b/src/crossfade.c
index 2bac4a649..8d752cf5f 100644
--- a/src/crossfade.c
+++ b/src/crossfade.c
@@ -58,6 +58,10 @@ void cross_fade_apply(struct music_chunk *a, const struct music_chunk *b,
{
size_t size;
+ assert(a != NULL);
+ assert(b != NULL);
+ assert(a->length == 0 || b->length == 0 ||
+ audio_format_equals(&a->audio_format, b->audio_format));
assert(current_chunk <= num_chunks);
if (a->tag == NULL && b->tag != NULL)
@@ -79,6 +83,12 @@ void cross_fade_apply(struct music_chunk *a, const struct music_chunk *b,
there is unmixed rest at the end. Copy it over.
The output buffer API guarantees that there is
enough room in a->data. */
+
+#ifndef NDEBUG
+ if (a->length == 0)
+ a->audio_format = b->audio_format;
+#endif
+
memcpy(a->data + a->length,
b->data + a->length,
b->length - a->length);