https://bugs.gentoo.org/965279
https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4822

Replace deprecated libheif API since 1.20.x.
--- a/src/heif.imageio/heifinput.cpp	2025-07-05 08:39:32.000000000 +0300
+++ b/src/heif.imageio/heifinput.cpp	2025-10-30 08:06:22.249543775 +0300
@@ -390,8 +390,13 @@
 #else
     int ystride = 0;
 #endif
+#if LIBHEIF_NUMERIC_VERSION >= MAKE_LIBHEIF_VERSION(1, 20, 0, 0)
+    const uint8_t* hdata = m_himage.get_plane2(heif_channel_interleaved,
+                                              &ystride);
+#else
     const uint8_t* hdata = m_himage.get_plane(heif_channel_interleaved,
                                               &ystride);
+#endif
     if (!hdata) {
         errorfmt("Unknown read error");
         return false;
--- a/src/heif.imageio/heifoutput.cpp	2025-07-05 08:39:32.000000000 +0300
+++ b/src/heif.imageio/heifoutput.cpp	2025-10-30 08:06:11.566273402 +0300
@@ -155,7 +155,11 @@
 #else
     int hystride = 0;
 #endif
+#if LIBHEIF_NUMERIC_VERSION >= MAKE_LIBHEIF_VERSION(1, 20, 0, 0)
+    uint8_t* hdata = m_himage.get_plane2(heif_channel_interleaved, &hystride);
+#else
     uint8_t* hdata = m_himage.get_plane(heif_channel_interleaved, &hystride);
+#endif
     hdata += hystride * (y - m_spec.y);
     memcpy(hdata, data, hystride);
     return true;