audio/chmap: link string buffer size to MP_NUM_CHANNELS

1 files changed, 4 insertions, 2 deletions

diff --git a/audio/chmap.h b/audio/chmap.h
index 6fbb60d025..35f569d9cc 100644
--- a/audio/chmap.h
+++ b/audio/chmap.h
@@ -124,10 +124,12 @@ void mp_chmap_get_reorder(int src[MP_NUM_CHANNELS], const struct mp_chmap *from,
 int mp_chmap_diffn(const struct mp_chmap *a, const struct mp_chmap *b);
 
 char *mp_chmap_to_str_buf(char *buf, size_t buf_size, const struct mp_chmap *src);
-#define mp_chmap_to_str(m) mp_chmap_to_str_buf((char[64]){0}, 64, (m))
+#define mp_chmap_to_str_(m, sz) mp_chmap_to_str_buf((char[sz]){0}, sz, (m))
+#define mp_chmap_to_str(m) mp_chmap_to_str_(m, MP_NUM_CHANNELS * 4)
 
 char *mp_chmap_to_str_hr_buf(char *buf, size_t buf_size, const struct mp_chmap *src);
-#define mp_chmap_to_str_hr(m) mp_chmap_to_str_hr_buf((char[128]){0}, 128, (m))
+#define mp_chmap_to_str_hr_(m, sz) mp_chmap_to_str_hr_buf((char[sz]){0}, sz, (m))
+#define mp_chmap_to_str_hr(m) mp_chmap_to_str_hr_(m, MP_NUM_CHANNELS * 4)
 
 bool mp_chmap_from_str(struct mp_chmap *dst, bstr src);