@@ -462,6 +462,33 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;

 #   define AV_WN64A(p, v) AV_WNA(64, p, v)

 #endif

+/*

+ * The AV_COPYxxU macros are suitable for copying data to/from unaligned

+ * memory locations.

+ */

+

+#define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s));

+

+#ifndef AV_COPY16U

+#   define AV_COPY16U(d, s) AV_COPYU(16, d, s)

+#endif

+

+#ifndef AV_COPY32U

+#   define AV_COPY32U(d, s) AV_COPYU(32, d, s)

+#endif

+

+#ifndef AV_COPY64U

+#   define AV_COPY64U(d, s) AV_COPYU(64, d, s)

+#endif

+

+#ifndef AV_COPY128U

+#   define AV_COPY128U(d, s)                                    \

+    do {                                                        \

+        AV_COPY64U(d, s);                                       \

+        AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8);     \

+    } while(0)

+#endif

+

 /* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be

  * naturally aligned. They may be implemented using MMX,

  * so emms_c() must be called before using any float code