3 files changed, 53 insertions, 1 deletions
diff --git a/chromium/third_party/ffmpeg/libavutil/attributes.h b/chromium/third_party/ffmpeg/libavutil/attributes.h
index ced108aa2c7..ab2a1fdd0e1 100644
--- a/chromium/third_party/ffmpeg/libavutil/attributes.h
+++ b/chromium/third_party/ffmpeg/libavutil/attributes.h
@@ -34,6 +34,12 @@
 #    define AV_GCC_VERSION_AT_MOST(x,y)  0
 #endif
 
+#ifdef __has_builtin
+#    define AV_HAS_BUILTIN(x) __has_builtin(x)
+#else
+#    define AV_HAS_BUILTIN(x) false
+#endif
+
 #ifndef av_always_inline
 #if AV_GCC_VERSION_AT_LEAST(3,1)
 #    define av_always_inline __attribute__((always_inline)) inline
diff --git a/chromium/third_party/ffmpeg/libavutil/common.h b/chromium/third_party/ffmpeg/libavutil/common.h
index 142ff9abe7e..2777cea9f9b 100644
--- a/chromium/third_party/ffmpeg/libavutil/common.h
+++ b/chromium/third_party/ffmpeg/libavutil/common.h
@@ -292,6 +292,46 @@ static av_always_inline int av_sat_dsub32_c(int a, int 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 (!defined(__INTEL_COMPILER) && AV_GCC_VERSION_AT_LEAST(5,1)) || AV_HAS_BUILTIN(__builtin_add_overflow)
+    int64_t tmp;
+    return !__builtin_add_overflow(a, b, &tmp) ? tmp : (tmp < 0 ? INT64_MAX : INT64_MIN);
+#else
+    if (b >= 0 && a >= INT64_MAX - b)
+        return INT64_MAX;
+    if (b <= 0 && a <= INT64_MIN - b)
+        return INT64_MIN;
+    return a + b;
+#endif
+}
+
+/**
+ * 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 (!defined(__INTEL_COMPILER) && AV_GCC_VERSION_AT_LEAST(5,1)) || AV_HAS_BUILTIN(__builtin_sub_overflow)
+    int64_t tmp;
+    return !__builtin_sub_overflow(a, b, &tmp) ? tmp : (tmp < 0 ? INT64_MAX : INT64_MIN);
+#else
+    if (b <= 0 && a >= INT64_MAX + b)
+        return INT64_MAX;
+    if (b >= 0 && a <= INT64_MIN + b)
+        return INT64_MIN;
+    return a - b;
+#endif
+}
+
+/**
  * Clip a float value into the amin-amax range.
  * @param a value to clip
  * @param amin minimum value of the clip range
@@ -545,6 +585,12 @@ static av_always_inline av_const int av_parity_c(uint32_t v)
 #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
diff --git a/chromium/third_party/ffmpeg/libavutil/mathematics.c b/chromium/third_party/ffmpeg/libavutil/mathematics.c
index 0485db7222f..16c6e4db030 100644
--- a/chromium/third_party/ffmpeg/libavutil/mathematics.c
+++ b/chromium/third_party/ffmpeg/libavutil/mathematics.c
@@ -207,7 +207,7 @@ int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t i
         int64_t old = av_rescale_q(ts, ts_tb, inc_tb);
         int64_t old_ts = av_rescale_q(old, inc_tb, ts_tb);
 
-        if (old == INT64_MAX)
+        if (old == INT64_MAX || old == AV_NOPTS_VALUE || old_ts == AV_NOPTS_VALUE)
             return ts;
 
         return av_rescale_q(old + 1, inc_tb, ts_tb) + (ts - old_ts);