return av_sat_sub32(a, av_sat_add32(b, b));
}
+/**
+ * Add two signed 64-bit values with saturation.
+ *
+ * @param a one value
+ * @param b another value
+ * @return sum with signed saturation
+ */
+static av_always_inline int64_t av_sat_add64_c(int64_t a, int64_t b) {
+ if (b >= 0 && a >= INT64_MAX - b)
+ return INT64_MAX;
+ if (b <= 0 && a <= INT64_MIN - b)
+ return INT64_MIN;
+ return a + b;
+}
+
+/**
+ * Subtract two signed 64-bit values with saturation.
+ *
+ * @param a one value
+ * @param b another value
+ * @return difference with signed saturation
+ */
+static av_always_inline int64_t av_sat_sub64_c(int64_t a, int64_t b) {
+ if (b <= 0 && a >= INT64_MAX + b)
+ return INT64_MAX;
+ if (b >= 0 && a <= INT64_MIN + b)
+ return INT64_MIN;
+ return a - b;
+}
+
/**
* Clip a float value into the amin-amax range.
* @param a value to clip
#ifndef av_sat_dsub32
# define av_sat_dsub32 av_sat_dsub32_c
#endif
+#ifndef av_sat_add64
+# define av_sat_add64 av_sat_add64_c
+#endif
+#ifndef av_sat_sub64
+# define av_sat_sub64 av_sat_sub64_c
+#endif
#ifndef av_clipf
# define av_clipf av_clipf_c
#endif