Update FFmpeg code to n3.2-65-gee56777

32 files changed, 1116 insertions, 480 deletions

diff --git a/media/ffvpx/libavutil/adler32.h b/media/ffvpx/libavutil/adler32.h
index 0dc69ec0a..a1f035b73 100644
--- a/media/ffvpx/libavutil/adler32.h
+++ b/media/ffvpx/libavutil/adler32.h
@@ -18,6 +18,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+/**
+ * @file
+ * @ingroup lavu_adler32
+ * Public header for Adler-32 hash function implementation.
+ */
+
 #ifndef AVUTIL_ADLER32_H
 #define AVUTIL_ADLER32_H
 
@@ -25,11 +31,10 @@
 #include "attributes.h"
 
 /**
- * @file
- * Public header for libavutil Adler32 hasher
+ * @defgroup lavu_adler32 Adler-32
+ * @ingroup lavu_hash
+ * Adler-32 hash function implementation.
  *
- * @defgroup lavu_adler32 Adler32
- * @ingroup lavu_crypto
  * @{
  */
 
diff --git a/media/ffvpx/libavutil/avassert.h b/media/ffvpx/libavutil/avassert.h
index f47363764..46f3fea58 100644
--- a/media/ffvpx/libavutil/avassert.h
+++ b/media/ffvpx/libavutil/avassert.h
@@ -59,8 +59,17 @@
  */
 #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
 #define av_assert2(cond) av_assert0(cond)
+#define av_assert2_fpu() av_assert0_fpu()
 #else
 #define av_assert2(cond) ((void)0)
+#define av_assert2_fpu() ((void)0)
 #endif
 
+/**
+ * Assert that floating point opperations can be executed.
+ *
+ * This will av_assert0() that the cpu is not in MMX state on X86
+ */
+void av_assert0_fpu(void);
+
 #endif /* AVUTIL_AVASSERT_H */
diff --git a/media/ffvpx/libavutil/avconfig.h b/media/ffvpx/libavutil/avconfig.h
index 36a8cd14d..2ec333d15 100644
--- a/media/ffvpx/libavutil/avconfig.h
+++ b/media/ffvpx/libavutil/avconfig.h
@@ -3,5 +3,5 @@
 #define AVUTIL_AVCONFIG_H
 #define AV_HAVE_BIGENDIAN 0
 #define AV_HAVE_FAST_UNALIGNED 1
-#define AV_HAVE_INCOMPATIBLE_LIBAV_ABI 0
+#define AV_HAVE_INCOMPATIBLE_FORK_ABI 0
 #endif /* AVUTIL_AVCONFIG_H */
diff --git a/media/ffvpx/libavutil/avutil.h b/media/ffvpx/libavutil/avutil.h
index c1f76c16e..29dd830bf 100644
--- a/media/ffvpx/libavutil/avutil.h
+++ b/media/ffvpx/libavutil/avutil.h
@@ -23,7 +23,8 @@
 
 /**
  * @file
- * external API header
+ * @ingroup lavu
+ * Convenience header that includes @ref lavu "libavutil"'s core.
  */
 
 /**
@@ -78,14 +79,15 @@
  */
 
 /**
- * @defgroup lavu Common utility functions
+ * @defgroup lavu libavutil
+ * Common code shared across all FFmpeg libraries.
  *
- * @brief
- * libavutil contains the code shared across all the other FFmpeg
- * libraries
- *
- * @note In order to use the functions provided by avutil you must include
- * the specific header.
+ * @note
+ * libavutil is designed to be modular. In most cases, in order to use the
+ * functions provided by one component of libavutil you must explicitly include
+ * the specific header containing that feature. If you are only using
+ * media-related components, you could simply include libavutil/avutil.h, which
+ * brings in most of the "core" components.
  *
  * @{
  *
@@ -94,7 +96,7 @@
  * @{
  * @}
  *
- * @defgroup lavu_math Maths
+ * @defgroup lavu_math Mathematics
  * @{
  *
  * @}
diff --git a/media/ffvpx/libavutil/avutil.symbols b/media/ffvpx/libavutil/avutil.symbols
index ecd33c60a..81cf6a8ef 100644
--- a/media/ffvpx/libavutil/avutil.symbols
+++ b/media/ffvpx/libavutil/avutil.symbols
@@ -162,6 +162,7 @@ av_get_token
 av_gettime
 av_gettime_relative
 av_gettime_relative_is_monotonic
+av_hwframe_get_buffer
 av_image_alloc
 av_image_check_sar
 av_image_check_size
diff --git a/media/ffvpx/libavutil/crc.h b/media/ffvpx/libavutil/crc.h
index ef8a7137e..2a1b0d762 100644
--- a/media/ffvpx/libavutil/crc.h
+++ b/media/ffvpx/libavutil/crc.h
@@ -18,6 +18,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+/**
+ * @file
+ * @ingroup lavu_crc32
+ * Public header for CRC hash function implementation.
+ */
+
 #ifndef AVUTIL_CRC_H
 #define AVUTIL_CRC_H
 
@@ -27,8 +33,14 @@
 #include "version.h"
 
 /**
- * @defgroup lavu_crc32 CRC32
- * @ingroup lavu_crypto
+ * @defgroup lavu_crc32 CRC
+ * @ingroup lavu_hash
+ * CRC (Cyclic Redundancy Check) hash function implementation.
+ *
+ * This module supports numerous CRC polynomials, in addition to the most
+ * widely used CRC-32-IEEE. See @ref AVCRCId for a list of available
+ * polynomials.
+ *
  * @{
  */
 
diff --git a/media/ffvpx/libavutil/dict.c b/media/ffvpx/libavutil/dict.c
index f70c7e005..0ea71386e 100644
--- a/media/ffvpx/libavutil/dict.c
+++ b/media/ffvpx/libavutil/dict.c
@@ -24,6 +24,7 @@
 #include "dict.h"
 #include "internal.h"
 #include "mem.h"
+#include "time_internal.h"
 #include "bprint.h"
 
 struct AVDictionary {
@@ -253,3 +254,19 @@ int av_dict_get_string(const AVDictionary *m, char **buffer,
     }
     return av_bprint_finalize(&bprint, buffer);
 }
+
+int avpriv_dict_set_timestamp(AVDictionary **dict, const char *key, int64_t timestamp)
+{
+    time_t seconds = timestamp / 1000000;
+    struct tm *ptm, tmbuf;
+    ptm = gmtime_r(&seconds, &tmbuf);
+    if (ptm) {
+        char buf[32];
+        if (!strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", ptm))
+            return AVERROR_EXTERNAL;
+        av_strlcatf(buf, sizeof(buf), ".%06dZ", (int)(timestamp % 1000000));
+        return av_dict_set(dict, key, buf, 0);
+    } else {
+        return AVERROR_EXTERNAL;
+    }
+}
diff --git a/media/ffvpx/libavutil/dummy_funcs.c b/media/ffvpx/libavutil/dummy_funcs.c
index dc13fe3a4..2ea84a140 100644
--- a/media/ffvpx/libavutil/dummy_funcs.c
+++ b/media/ffvpx/libavutil/dummy_funcs.c
@@ -79,3 +79,5 @@ int av_opt_is_set_to_default(void *obj, const AVOption *o) { return 0; }
 int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags) { return 0; }
 int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
                      const char key_val_sep, const char pairs_sep) { return 0; }
+
+int av_hwframe_get_buffer(struct AVBufferRef* hwframe_ref, struct AVFrame* frame, int flags) { return 0; }
diff --git a/media/ffvpx/libavutil/dynarray.h b/media/ffvpx/libavutil/dynarray.h
index 4947d93dc..034a9fedf 100644
--- a/media/ffvpx/libavutil/dynarray.h
+++ b/media/ffvpx/libavutil/dynarray.h
@@ -42,7 +42,7 @@
  *                     array and size are not changed; the statement can end
  *                     with a return or a goto
  */
-#define AV_DYNARRAY_ADD(av_size_max, av_elt_size, av_array, av_size, \
+#define FF_DYNARRAY_ADD(av_size_max, av_elt_size, av_array, av_size, \
                         av_success, av_failure) \
     do { \
         size_t av_size_new = (av_size); \
diff --git a/media/ffvpx/libavutil/frame.c b/media/ffvpx/libavutil/frame.c
index d5c7c9f32..53e617422 100644
--- a/media/ffvpx/libavutil/frame.c
+++ b/media/ffvpx/libavutil/frame.c
@@ -99,12 +99,16 @@ static void get_frame_defaults(AVFrame *frame)
     memset(frame, 0, sizeof(*frame));
 
     frame->pts                   =
-    frame->pkt_dts               =
+    frame->pkt_dts               = AV_NOPTS_VALUE;
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
     frame->pkt_pts               = AV_NOPTS_VALUE;
-    av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE);
-    av_frame_set_pkt_duration         (frame, 0);
-    av_frame_set_pkt_pos              (frame, -1);
-    av_frame_set_pkt_size             (frame, -1);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    frame->best_effort_timestamp = AV_NOPTS_VALUE;
+    frame->pkt_duration        = 0;
+    frame->pkt_pos             = -1;
+    frame->pkt_size            = -1;
     frame->key_frame           = 1;
     frame->sample_aspect_ratio = (AVRational){ 0, 1 };
     frame->format              = -1; /* unknown */
@@ -114,6 +118,7 @@ static void get_frame_defaults(AVFrame *frame)
     frame->colorspace          = AVCOL_SPC_UNSPECIFIED;
     frame->color_range         = AVCOL_RANGE_UNSPECIFIED;
     frame->chroma_location     = AVCHROMA_LOC_UNSPECIFIED;
+    frame->flags               = 0;
 }
 
 static void free_side_data(AVFrameSideData **ptr_sd)
@@ -294,7 +299,11 @@ static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy)
     dst->palette_has_changed    = src->palette_has_changed;
     dst->sample_rate            = src->sample_rate;
     dst->opaque                 = src->opaque;
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
     dst->pkt_pts                = src->pkt_pts;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
     dst->pkt_dts                = src->pkt_dts;
     dst->pkt_pos                = src->pkt_pos;
     dst->pkt_size               = src->pkt_size;
diff --git a/media/ffvpx/libavutil/frame.h b/media/ffvpx/libavutil/frame.h
index 2b5c3320c..8e51361e2 100644
--- a/media/ffvpx/libavutil/frame.h
+++ b/media/ffvpx/libavutil/frame.h
@@ -178,7 +178,7 @@ typedef struct AVFrameSideData {
  * without breaking compatibility with each other.
  *
  * Fields can be accessed through AVOptions, the name string used, matches the
- * C structure field name for fields accessable through AVOptions. The AVClass
+ * C structure field name for fields accessible through AVOptions. The AVClass
  * for AVFrame can be obtained from avcodec_get_frame_class()
  */
 typedef struct AVFrame {
@@ -267,10 +267,14 @@ typedef struct AVFrame {
      */
     int64_t pts;
 
+#if FF_API_PKT_PTS
     /**
      * PTS copied from the AVPacket that was decoded to produce this frame.
+     * @deprecated use the pts field instead
      */
+    attribute_deprecated
     int64_t pkt_pts;
+#endif
 
     /**
      * DTS copied from the AVPacket that triggered returning this frame. (if frame threading isn't used)
@@ -385,6 +389,7 @@ typedef struct AVFrame {
 
 /**
  * @defgroup lavu_frame_flags AV_FRAME_FLAGS
+ * @ingroup lavu_frame
  * Flags describing additional frame properties.
  *
  * @{
@@ -395,6 +400,10 @@ typedef struct AVFrame {
  */
 #define AV_FRAME_FLAG_CORRUPT       (1 << 0)
 /**
+ * A flag to mark the frames which need to be decoded, but shouldn't be output.
+ */
+#define AV_FRAME_FLAG_DISCARD   (1 << 2)
+/**
  * @}
  */
 
diff --git a/media/ffvpx/libavutil/hwcontext.h b/media/ffvpx/libavutil/hwcontext.h
index 4e9da0224..5e2af092a 100644
--- a/media/ffvpx/libavutil/hwcontext.h
+++ b/media/ffvpx/libavutil/hwcontext.h
@@ -29,6 +29,7 @@ enum AVHWDeviceType {
     AV_HWDEVICE_TYPE_CUDA,
     AV_HWDEVICE_TYPE_VAAPI,
     AV_HWDEVICE_TYPE_DXVA2,
+    AV_HWDEVICE_TYPE_QSV,
 };
 
 typedef struct AVHWDeviceInternal AVHWDeviceInternal;
diff --git a/media/ffvpx/libavutil/internal.h b/media/ffvpx/libavutil/internal.h
index 61784b512..e995af97e 100644
--- a/media/ffvpx/libavutil/internal.h
+++ b/media/ffvpx/libavutil/internal.h
@@ -330,6 +330,16 @@ static av_always_inline av_const int avpriv_mirror(int x, int w)
 
 void ff_check_pixfmt_descriptors(void);
 
+/**
+ * Set a dictionary value to an ISO-8601 compliant timestamp string.
+ *
+ * @param s AVFormatContext
+ * @param key metadata key
+ * @param timestamp unix timestamp in microseconds
+ * @return <0 on error
+ */
+int avpriv_dict_set_timestamp(AVDictionary **dict, const char *key, int64_t timestamp);
+
 extern const uint8_t ff_reverse[256];
 
 #endif /* AVUTIL_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/log.h b/media/ffvpx/libavutil/log.h
index 0acc1b921..f0a57385d 100644
--- a/media/ffvpx/libavutil/log.h
+++ b/media/ffvpx/libavutil/log.h
@@ -44,7 +44,7 @@ typedef enum {
     AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
     AV_CLASS_CATEGORY_DEVICE_OUTPUT,
     AV_CLASS_CATEGORY_DEVICE_INPUT,
-    AV_CLASS_CATEGORY_NB, ///< not part of ABI/API
+    AV_CLASS_CATEGORY_NB  ///< not part of ABI/API
 }AVClassCategory;
 
 #define AV_IS_INPUT_DEVICE(category) \
diff --git a/media/ffvpx/libavutil/mathematics.h b/media/ffvpx/libavutil/mathematics.h
index 57c44f845..54901800b 100644
--- a/media/ffvpx/libavutil/mathematics.h
+++ b/media/ffvpx/libavutil/mathematics.h
@@ -18,6 +18,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+/**
+ * @file
+ * @addtogroup lavu_math
+ * Mathematical utilities for working with timestamp and time base.
+ */
+
 #ifndef AVUTIL_MATHEMATICS_H
 #define AVUTIL_MATHEMATICS_H
 
@@ -63,84 +69,155 @@
 
 /**
  * @addtogroup lavu_math
+ *
  * @{
  */
 
-
+/**
+ * Rounding methods.
+ */
 enum AVRounding {
     AV_ROUND_ZERO     = 0, ///< Round toward zero.
     AV_ROUND_INF      = 1, ///< Round away from zero.
     AV_ROUND_DOWN     = 2, ///< Round toward -infinity.
     AV_ROUND_UP       = 3, ///< Round toward +infinity.
     AV_ROUND_NEAR_INF = 5, ///< Round to nearest and halfway cases away from zero.
-    AV_ROUND_PASS_MINMAX = 8192, ///< Flag to pass INT64_MIN/MAX through instead of rescaling, this avoids special cases for AV_NOPTS_VALUE
+    /**
+     * Flag telling rescaling functions to pass `INT64_MIN`/`MAX` through
+     * unchanged, avoiding special cases for #AV_NOPTS_VALUE.
+     *
+     * Unlike other values of the enumeration AVRounding, this value is a
+     * bitmask that must be used in conjunction with another value of the
+     * enumeration through a bitwise OR, in order to set behavior for normal
+     * cases.
+     *
+     * @code{.c}
+     * av_rescale_rnd(3, 1, 2, AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
+     * // Rescaling 3:
+     * //     Calculating 3 * 1 / 2
+     * //     3 / 2 is rounded up to 2
+     * //     => 2
+     *
+     * av_rescale_rnd(AV_NOPTS_VALUE, 1, 2, AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
+     * // Rescaling AV_NOPTS_VALUE:
+     * //     AV_NOPTS_VALUE == INT64_MIN
+     * //     AV_NOPTS_VALUE is passed through
+     * //     => AV_NOPTS_VALUE
+     * @endcode
+     */
+    AV_ROUND_PASS_MINMAX = 8192,
 };
 
 /**
- * Compute the greatest common divisor of a and b.
+ * Compute the greatest common divisor of two integer operands.
  *
- * @return gcd of a and b up to sign; if a >= 0 and b >= 0, return value is >= 0;
+ * @param a,b Operands
+ * @return GCD of a and b up to sign; if a >= 0 and b >= 0, return value is >= 0;
  * if a == 0 and b == 0, returns 0.
  */
 int64_t av_const av_gcd(int64_t a, int64_t b);
 
 /**
  * Rescale a 64-bit integer with rounding to nearest.
- * A simple a*b/c isn't possible as it can overflow.
+ *
+ * The operation is mathematically equivalent to `a * b / c`, but writing that
+ * directly can overflow.
+ *
+ * This function is equivalent to av_rescale_rnd() with #AV_ROUND_NEAR_INF.
+ *
+ * @see av_rescale_rnd(), av_rescale_q(), av_rescale_q_rnd()
  */
 int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const;
 
 /**
  * Rescale a 64-bit integer with specified rounding.
- * A simple a*b/c isn't possible as it can overflow.
  *
- * @return rescaled value a, or if AV_ROUND_PASS_MINMAX is set and a is
- *         INT64_MIN or INT64_MAX then a is passed through unchanged.
+ * The operation is mathematically equivalent to `a * b / c`, but writing that
+ * directly can overflow, and does not support different rounding methods.
+ *
+ * @see av_rescale(), av_rescale_q(), av_rescale_q_rnd()
  */
-int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding) av_const;
+int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd) av_const;
 
 /**
  * Rescale a 64-bit integer by 2 rational numbers.
+ *
+ * The operation is mathematically equivalent to `a * bq / cq`.
+ *
+ * This function is equivalent to av_rescale_q_rnd() with #AV_ROUND_NEAR_INF.
+ *
+ * @see av_rescale(), av_rescale_rnd(), av_rescale_q_rnd()
  */
 int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const;
 
 /**
  * Rescale a 64-bit integer by 2 rational numbers with specified rounding.
  *
- * @return rescaled value a, or if AV_ROUND_PASS_MINMAX is set and a is
- *         INT64_MIN or INT64_MAX then a is passed through unchanged.
+ * The operation is mathematically equivalent to `a * bq / cq`.
+ *
+ * @see av_rescale(), av_rescale_rnd(), av_rescale_q()
  */
 int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq,
-                         enum AVRounding) av_const;
+                         enum AVRounding rnd) av_const;
 
 /**
- * Compare 2 timestamps each in its own timebases.
- * The result of the function is undefined if one of the timestamps
- * is outside the int64_t range when represented in the others timebase.
- * @return -1 if ts_a is before ts_b, 1 if ts_a is after ts_b or 0 if they represent the same position
+ * Compare two timestamps each in its own time base.
+ *
+ * @return One of the following values:
+ *         - -1 if `ts_a` is before `ts_b`
+ *         - 1 if `ts_a` is after `ts_b`
+ *         - 0 if they represent the same position
+ *
+ * @warning
+ * The result of the function is undefined if one of the timestamps is outside
+ * the `int64_t` range when represented in the other's timebase.
  */
 int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b);
 
 /**
- * Compare 2 integers modulo mod.
- * That is we compare integers a and b for which only the least
- * significant log2(mod) bits are known.
- *
- * @param mod must be a power of 2
- * @return a negative value if a is smaller than b
- *         a positive value if a is greater than b
- *         0                if a equals          b
+ * Compare the remainders of two integer operands divided by a common divisor.
+ *
+ * In other words, compare the least significant `log2(mod)` bits of integers
+ * `a` and `b`.
+ *
+ * @code{.c}
+ * av_compare_mod(0x11, 0x02, 0x10) < 0 // since 0x11 % 0x10  (0x1) < 0x02 % 0x10  (0x2)
+ * av_compare_mod(0x11, 0x02, 0x20) > 0 // since 0x11 % 0x20 (0x11) > 0x02 % 0x20 (0x02)
+ * @endcode
+ *
+ * @param a,b Operands
+ * @param mod Divisor; must be a power of 2
+ * @return
+ *         - a negative value if `a % mod < b % mod`
+ *         - a positive value if `a % mod > b % mod`
+ *         - zero             if `a % mod == b % mod`
  */
 int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod);
 
 /**
  * Rescale a timestamp while preserving known durations.
  *
- * @param in_ts Input timestamp
- * @param in_tb Input timebase
- * @param fs_tb Duration and *last timebase
- * @param duration duration till the next call
- * @param out_tb Output timebase
+ * This function is designed to be called per audio packet to scale the input
+ * timestamp to a different time base. Compared to a simple av_rescale_q()
+ * call, this function is robust against possible inconsistent frame durations.
+ *
+ * The `last` parameter is a state variable that must be preserved for all
+ * subsequent calls for the same stream. For the first call, `*last` should be
+ * initialized to #AV_NOPTS_VALUE.
+ *
+ * @param[in]     in_tb    Input time base
+ * @param[in]     in_ts    Input timestamp
+ * @param[in]     fs_tb    Duration time base; typically this is finer-grained
+ *                         (greater) than `in_tb` and `out_tb`
+ * @param[in]     duration Duration till the next call to this function (i.e.
+ *                         duration of the current packet/frame)
+ * @param[in,out] last     Pointer to a timestamp expressed in terms of
+ *                         `fs_tb`, acting as a state variable
+ * @param[in]     out_tb   Output timebase
+ * @return        Timestamp expressed in terms of `out_tb`
+ *
+ * @note In the context of this function, "duration" is in term of samples, not
+ *       seconds.
  */
 int64_t av_rescale_delta(AVRational in_tb, int64_t in_ts,  AVRational fs_tb, int duration, int64_t *last, AVRational out_tb);
 
@@ -150,15 +227,15 @@ int64_t av_rescale_delta(AVRational in_tb, int64_t in_ts,  AVRational fs_tb, int
  * This function guarantees that when the same value is repeatly added that
  * no accumulation of rounding errors occurs.
  *
- * @param ts Input timestamp
- * @param ts_tb Input timestamp timebase
- * @param inc value to add to ts
- * @param inc_tb inc timebase
+ * @param[in] ts     Input timestamp
+ * @param[in] ts_tb  Input timestamp time base
+ * @param[in] inc    Value to be added
+ * @param[in] inc_tb Time base of `inc`
  */
 int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc);
 
 
-    /**
+/**
  * @}
  */
 
diff --git a/media/ffvpx/libavutil/mem.c b/media/ffvpx/libavutil/mem.c
index 8dfaad827..1a8fc21e9 100644
--- a/media/ffvpx/libavutil/mem.c
+++ b/media/ffvpx/libavutil/mem.c
@@ -179,7 +179,7 @@ void *av_realloc_f(void *ptr, size_t nelem, size_t elsize)
         return NULL;
     }
     r = av_realloc(ptr, size);
-    if (!r && size)
+    if (!r)
         av_free(ptr);
     return r;
 }
@@ -312,7 +312,7 @@ int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
     void **tab;
     memcpy(&tab, tab_ptr, sizeof(tab));
 
-    AV_DYNARRAY_ADD(INT_MAX, sizeof(*tab), tab, *nb_ptr, {
+    FF_DYNARRAY_ADD(INT_MAX, sizeof(*tab), tab, *nb_ptr, {
         tab[*nb_ptr] = elem;
         memcpy(tab_ptr, &tab, sizeof(tab));
     }, {
@@ -326,7 +326,7 @@ void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem)
     void **tab;
     memcpy(&tab, tab_ptr, sizeof(tab));
 
-    AV_DYNARRAY_ADD(INT_MAX, sizeof(*tab), tab, *nb_ptr, {
+    FF_DYNARRAY_ADD(INT_MAX, sizeof(*tab), tab, *nb_ptr, {
         tab[*nb_ptr] = elem;
         memcpy(tab_ptr, &tab, sizeof(tab));
     }, {
@@ -340,7 +340,7 @@ void *av_dynarray2_add(void **tab_ptr, int *nb_ptr, size_t elem_size,
 {
     uint8_t *tab_elem_data = NULL;
 
-    AV_DYNARRAY_ADD(INT_MAX, elem_size, *tab_ptr, *nb_ptr, {
+    FF_DYNARRAY_ADD(INT_MAX, elem_size, *tab_ptr, *nb_ptr, {
         tab_elem_data = (uint8_t *)*tab_ptr + (*nb_ptr) * elem_size;
         if (elem_data)
             memcpy(tab_elem_data, elem_data, elem_size);
diff --git a/media/ffvpx/libavutil/mem.h b/media/ffvpx/libavutil/mem.h
index d25b3229b..f9d888478 100644
--- a/media/ffvpx/libavutil/mem.h
+++ b/media/ffvpx/libavutil/mem.h
@@ -20,7 +20,8 @@
 
 /**
  * @file
- * memory handling functions
+ * @ingroup lavu_mem
+ * Memory handling functions
  */
 
 #ifndef AVUTIL_MEM_H
@@ -35,9 +36,56 @@
 
 /**
  * @addtogroup lavu_mem
+ * Utilities for manipulating memory.
+ *
+ * FFmpeg has several applications of memory that are not required of a typical
+ * program. For example, the computing-heavy components like video decoding and
+ * encoding can be sped up significantly through the use of aligned memory.
+ *
+ * However, for each of FFmpeg's applications of memory, there might not be a
+ * recognized or standardized API for that specific use. Memory alignment, for
+ * instance, varies wildly depending on operating systems, architectures, and
+ * compilers. Hence, this component of @ref libavutil is created to make
+ * dealing with memory consistently possible on all platforms.
+ *
  * @{
+ *
+ * @defgroup lavu_mem_macros Alignment Macros
+ * Helper macros for declaring aligned variables.
+ * @{
+ */
+
+/**
+ * @def DECLARE_ALIGNED(n,t,v)
+ * Declare a variable that is aligned in memory.
+ *
+ * @code{.c}
+ * DECLARE_ALIGNED(16, uint16_t, aligned_int) = 42;
+ * DECLARE_ALIGNED(32, uint8_t, aligned_array)[128];
+ *
+ * // The default-alignment equivalent would be
+ * uint16_t aligned_int = 42;
+ * uint8_t aligned_array[128];
+ * @endcode
+ *
+ * @param n Minimum alignment in bytes
+ * @param t Type of the variable (or array element)
+ * @param v Name of the variable
  */
 
+/**
+ * @def DECLARE_ASM_CONST(n,t,v)
+ * Declare a static constant aligned variable appropriate for use in inline
+ * assembly code.
+ *
+ * @code{.c}
+ * DECLARE_ASM_CONST(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008);
+ * @endcode
+ *
+ * @param n Minimum alignment in bytes
+ * @param t Type of the variable (or array element)
+ * @param v Name of the variable
+ */
 
 #if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C)
     #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
@@ -60,12 +108,47 @@
     #define DECLARE_ASM_CONST(n,t,v)    static const t v
 #endif
 
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_attrs Function Attributes
+ * Function attributes applicable to memory handling functions.
+ *
+ * These function attributes can help compilers emit more useful warnings, or
+ * generate better code.
+ * @{
+ */
+
+/**
+ * @def av_malloc_attrib
+ * Function attribute denoting a malloc-like function.
+ *
+ * @see <a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-g_t_0040code_007bmalloc_007d-function-attribute-3251">Function attribute `malloc` in GCC's documentation</a>
+ */
+
 #if AV_GCC_VERSION_AT_LEAST(3,1)
     #define av_malloc_attrib __attribute__((__malloc__))
 #else
     #define av_malloc_attrib
 #endif
 
+/**
+ * @def av_alloc_size(...)
+ * Function attribute used on a function that allocates memory, whose size is
+ * given by the specified parameter(s).
+ *
+ * @code{.c}
+ * void *av_malloc(size_t size) av_alloc_size(1);
+ * void *av_calloc(size_t nmemb, size_t size) av_alloc_size(1, 2);
+ * @endcode
+ *
+ * @param ... One or two parameter indexes, separated by a comma
+ *
+ * @see <a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-g_t_0040code_007balloc_005fsize_007d-function-attribute-3220">Function attribute `alloc_size` in GCC's documentation</a>
+ */
+
 #if AV_GCC_VERSION_AT_LEAST(4,3)
     #define av_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
 #else
@@ -73,21 +156,51 @@
 #endif
 
 /**
- * Allocate a block of size bytes with alignment suitable for all
- * memory accesses (including vectors if available on the CPU).
- * @param size Size in bytes for the memory block to be allocated.
- * @return Pointer to the allocated block, NULL if the block cannot
- * be allocated.
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_funcs Heap Management
+ * Functions responsible for allocating, freeing, and copying memory.
+ *
+ * All memory allocation functions have a built-in upper limit of `INT_MAX`
+ * bytes. This may be changed with av_max_alloc(), although exercise extreme
+ * caution when doing so.
+ *
+ * @{
+ */
+
+/**
+ * Allocate a memory block with alignment suitable for all memory accesses
+ * (including vectors if available on the CPU).
+ *
+ * @param size Size in bytes for the memory block to be allocated
+ * @return Pointer to the allocated block, or `NULL` if the block cannot
+ *         be allocated
  * @see av_mallocz()
  */
 void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
 
 /**
- * Allocate a block of size * nmemb bytes with av_malloc().
- * @param nmemb Number of elements
- * @param size Size of the single element
- * @return Pointer to the allocated block, NULL if the block cannot
- * be allocated.
+ * Allocate a memory block with alignment suitable for all memory accesses
+ * (including vectors if available on the CPU) and zero all the bytes of the
+ * block.
+ *
+ * @param size Size in bytes for the memory block to be allocated
+ * @return Pointer to the allocated block, or `NULL` if it cannot be allocated
+ * @see av_malloc()
+ */
+void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
+
+/**
+ * Allocate a memory block for an array with av_malloc().
+ *
+ * The allocated memory will have size `size * nmemb` bytes.
+ *
+ * @param nmemb Number of element
+ * @param size  Size of a single element
+ * @return Pointer to the allocated block, or `NULL` if the block cannot
+ *         be allocated
  * @see av_malloc()
  */
 av_alloc_size(1, 2) static inline void *av_malloc_array(size_t nmemb, size_t size)
@@ -98,179 +211,378 @@ av_alloc_size(1, 2) static inline void *av_malloc_array(size_t nmemb, size_t siz
 }
 
 /**
- * Allocate or reallocate a block of memory.
- * If ptr is NULL and size > 0, allocate a new block. If
- * size is zero, free the memory block pointed to by ptr.
- * @param ptr Pointer to a memory block already allocated with
- * av_realloc() or NULL.
+ * Allocate a memory block for an array with av_mallocz().
+ *
+ * The allocated memory will have size `size * nmemb` bytes.
+ *
+ * @param nmemb Number of elements
+ * @param size  Size of the single element
+ * @return Pointer to the allocated block, or `NULL` if the block cannot
+ *         be allocated
+ *
+ * @see av_mallocz()
+ * @see av_malloc_array()
+ */
+av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
+{
+    if (!size || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_mallocz(nmemb * size);
+}
+
+/**
+ * Non-inlined equivalent of av_mallocz_array().
+ *
+ * Created for symmetry with the calloc() C function.
+ */
+void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
+
+/**
+ * Allocate, reallocate, or free a block of memory.
+ *
+ * If `ptr` is `NULL` and `size` > 0, allocate a new block. If `size` is
+ * zero, free the memory block pointed to by `ptr`. Otherwise, expand or
+ * shrink that block of memory according to `size`.
+ *
+ * @param ptr  Pointer to a memory block already allocated with
+ *             av_realloc() or `NULL`
  * @param size Size in bytes of the memory block to be allocated or
- * reallocated.
- * @return Pointer to a newly-reallocated block or NULL if the block
- * cannot be reallocated or the function is used to free the memory block.
- * @warning Pointers originating from the av_malloc() family of functions must
- *          not be passed to av_realloc(). The former can be implemented using
- *          memalign() (or other functions), and there is no guarantee that
- *          pointers from such functions can be passed to realloc() at all.
- *          The situation is undefined according to POSIX and may crash with
- *          some libc implementations.
+ *             reallocated
+ *
+ * @return Pointer to a newly-reallocated block or `NULL` if the block
+ *         cannot be reallocated or the function is used to free the memory block
+ *
+ * @warning Unlike av_malloc(), the returned pointer is not guaranteed to be
+ *          correctly aligned.
  * @see av_fast_realloc()
+ * @see av_reallocp()
  */
 void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
 
 /**
- * Allocate or reallocate a block of memory.
- * This function does the same thing as av_realloc, except:
- * - It takes two arguments and checks the result of the multiplication for
- *   integer overflow.
- * - It frees the input block in case of failure, thus avoiding the memory
- *   leak with the classic "buf = realloc(buf); if (!buf) return -1;".
+ * Allocate, reallocate, or free a block of memory through a pointer to a
+ * pointer.
+ *
+ * If `*ptr` is `NULL` and `size` > 0, allocate a new block. If `size` is
+ * zero, free the memory block pointed to by `*ptr`. Otherwise, expand or
+ * shrink that block of memory according to `size`.
+ *
+ * @param[in,out] ptr  Pointer to a pointer to a memory block already allocated
+ *                     with av_realloc(), or a pointer to `NULL`. The pointer
+ *                     is updated on success, or freed on failure.
+ * @param[in]     size Size in bytes for the memory block to be allocated or
+ *                     reallocated
+ *
+ * @return Zero on success, an AVERROR error code on failure
+ *
+ * @warning Unlike av_malloc(), the allocated memory is not guaranteed to be
+ *          correctly aligned.
  */
-void *av_realloc_f(void *ptr, size_t nelem, size_t elsize);
+av_warn_unused_result
+int av_reallocp(void *ptr, size_t size);
 
 /**
- * Allocate or reallocate a block of memory.
- * If *ptr is NULL and size > 0, allocate a new block. If
- * size is zero, free the memory block pointed to by ptr.
- * @param   ptr Pointer to a pointer to a memory block already allocated
- *          with av_realloc(), or pointer to a pointer to NULL.
- *          The pointer is updated on success, or freed on failure.
- * @param   size Size in bytes for the memory block to be allocated or
- *          reallocated
- * @return  Zero on success, an AVERROR error code on failure.
- * @warning Pointers originating from the av_malloc() family of functions must
- *          not be passed to av_reallocp(). The former can be implemented using
- *          memalign() (or other functions), and there is no guarantee that
- *          pointers from such functions can be passed to realloc() at all.
- *          The situation is undefined according to POSIX and may crash with
- *          some libc implementations.
+ * Allocate, reallocate, or free a block of memory.
+ *
+ * This function does the same thing as av_realloc(), except:
+ * - It takes two size arguments and allocates `nelem * elsize` bytes,
+ *   after checking the result of the multiplication for integer overflow.
+ * - It frees the input block in case of failure, thus avoiding the memory
+ *   leak with the classic
+ *   @code{.c}
+ *   buf = realloc(buf);
+ *   if (!buf)
+ *       return -1;
+ *   @endcode
+ *   pattern.
  */
-av_warn_unused_result
-int av_reallocp(void *ptr, size_t size);
+void *av_realloc_f(void *ptr, size_t nelem, size_t elsize);
 
 /**
- * Allocate or reallocate an array.
- * If ptr is NULL and nmemb > 0, allocate a new block. If
- * nmemb is zero, free the memory block pointed to by ptr.
- * @param ptr Pointer to a memory block already allocated with
- * av_realloc() or NULL.
- * @param nmemb Number of elements
- * @param size Size of the single element
+ * Allocate, reallocate, or free an array.
+ *
+ * If `ptr` is `NULL` and `nmemb` > 0, allocate a new block. If
+ * `nmemb` is zero, free the memory block pointed to by `ptr`.
+ *
+ * @param ptr   Pointer to a memory block already allocated with
+ *              av_realloc() or `NULL`
+ * @param nmemb Number of elements in the array
+ * @param size  Size of the single element of the array
+ *
  * @return Pointer to a newly-reallocated block or NULL if the block
- * cannot be reallocated or the function is used to free the memory block.
- * @warning Pointers originating from the av_malloc() family of functions must
- *          not be passed to av_realloc(). The former can be implemented using
- *          memalign() (or other functions), and there is no guarantee that
- *          pointers from such functions can be passed to realloc() at all.
- *          The situation is undefined according to POSIX and may crash with
- *          some libc implementations.
+ *         cannot be reallocated or the function is used to free the memory block
+ *
+ * @warning Unlike av_malloc(), the allocated memory is not guaranteed to be
+ *          correctly aligned.
+ * @see av_reallocp_array()
  */
 av_alloc_size(2, 3) void *av_realloc_array(void *ptr, size_t nmemb, size_t size);
 
 /**
- * Allocate or reallocate an array through a pointer to a pointer.
- * If *ptr is NULL and nmemb > 0, allocate a new block. If
- * nmemb is zero, free the memory block pointed to by ptr.
- * @param ptr Pointer to a pointer to a memory block already allocated
- * with av_realloc(), or pointer to a pointer to NULL.
- * The pointer is updated on success, or freed on failure.
- * @param nmemb Number of elements
- * @param size Size of the single element
- * @return Zero on success, an AVERROR error code on failure.
- * @warning Pointers originating from the av_malloc() family of functions must
- *          not be passed to av_realloc(). The former can be implemented using
- *          memalign() (or other functions), and there is no guarantee that
- *          pointers from such functions can be passed to realloc() at all.
- *          The situation is undefined according to POSIX and may crash with
- *          some libc implementations.
+ * Allocate, reallocate, or free an array through a pointer to a pointer.
+ *
+ * If `*ptr` is `NULL` and `nmemb` > 0, allocate a new block. If `nmemb` is
+ * zero, free the memory block pointed to by `*ptr`.
+ *
+ * @param[in,out] ptr   Pointer to a pointer to a memory block already
+ *                      allocated with av_realloc(), or a pointer to `NULL`.
+ *                      The pointer is updated on success, or freed on failure.
+ * @param[in]     nmemb Number of elements
+ * @param[in]     size  Size of the single element
+ *
+ * @return Zero on success, an AVERROR error code on failure
+ *
+ * @warning Unlike av_malloc(), the allocated memory is not guaranteed to be
+ *          correctly aligned.
  */
 av_alloc_size(2, 3) int av_reallocp_array(void *ptr, size_t nmemb, size_t size);
 
 /**
- * Free a memory block which has been allocated with av_malloc(z)() or
- * av_realloc().
- * @param ptr Pointer to the memory block which should be freed.
- * @note ptr = NULL is explicitly allowed.
- * @note It is recommended that you use av_freep() instead.
- * @see av_freep()
+ * Reallocate the given buffer if it is not large enough, otherwise do nothing.
+ *
+ * If the given buffer is `NULL`, then a new uninitialized buffer is allocated.
+ *
+ * If the given buffer is not large enough, and reallocation fails, `NULL` is
+ * returned and `*size` is set to 0, but the original buffer is not changed or
+ * freed.
+ *
+ * A typical use pattern follows:
+ *
+ * @code{.c}
+ * uint8_t *buf = ...;
+ * uint8_t *new_buf = av_fast_realloc(buf, &current_size, size_needed);
+ * if (!new_buf) {
+ *     // Allocation failed; clean up original buffer
+ *     av_freep(&buf);
+ *     return AVERROR(ENOMEM);
+ * }
+ * @endcode
+ *
+ * @param[in,out] ptr      Already allocated buffer, or `NULL`
+ * @param[in,out] size     Pointer to current size of buffer `ptr`. `*size` is
+ *                         changed to `min_size` in case of success or 0 in
+ *                         case of failure
+ * @param[in]     min_size New size of buffer `ptr`
+ * @return `ptr` if the buffer is large enough, a pointer to newly reallocated
+ *         buffer if the buffer was not large enough, or `NULL` in case of
+ *         error
+ * @see av_realloc()
+ * @see av_fast_malloc()
  */
-void av_free(void *ptr);
+void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size);
 
 /**
- * Allocate a block of size bytes with alignment suitable for all
- * memory accesses (including vectors if available on the CPU) and
- * zero all the bytes of the block.
- * @param size Size in bytes for the memory block to be allocated.
- * @return Pointer to the allocated block, NULL if it cannot be allocated.
- * @see av_malloc()
+ * Allocate a buffer, reusing the given one if large enough.
+ *
+ * Contrary to av_fast_realloc(), the current buffer contents might not be
+ * preserved and on error the old buffer is freed, thus no special handling to
+ * avoid memleaks is necessary.
+ *
+ * `*ptr` is allowed to be `NULL`, in which case allocation always happens if
+ * `size_needed` is greater than 0.
+ *
+ * @code{.c}
+ * uint8_t *buf = ...;
+ * av_fast_malloc(&buf, &current_size, size_needed);
+ * if (!buf) {
+ *     // Allocation failed; buf already freed
+ *     return AVERROR(ENOMEM);
+ * }
+ * @endcode
+ *
+ * @param[in,out] ptr      Pointer to pointer to an already allocated buffer.
+ *                         `*ptr` will be overwritten with pointer to new
+ *                         buffer on success or `NULL` on failure
+ * @param[in,out] size     Pointer to current size of buffer `*ptr`. `*size` is
+ *                         changed to `min_size` in case of success or 0 in
+ *                         case of failure
+ * @param[in]     min_size New size of buffer `*ptr`
+ * @see av_realloc()
+ * @see av_fast_mallocz()
  */
-void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
+void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size);
 
 /**
- * Allocate a block of nmemb * size bytes with alignment suitable for all
- * memory accesses (including vectors if available on the CPU) and
- * zero all the bytes of the block.
- * The allocation will fail if nmemb * size is greater than or equal
- * to INT_MAX.
- * @param nmemb
- * @param size
- * @return Pointer to the allocated block, NULL if it cannot be allocated.
+ * Allocate and clear a buffer, reusing the given one if large enough.
+ *
+ * Like av_fast_malloc(), but all newly allocated space is initially cleared.
+ * Reused buffer is not cleared.
+ *
+ * `*ptr` is allowed to be `NULL`, in which case allocation always happens if
+ * `size_needed` is greater than 0.
+ *
+ * @param[in,out] ptr      Pointer to pointer to an already allocated buffer.
+ *                         `*ptr` will be overwritten with pointer to new
+ *                         buffer on success or `NULL` on failure
+ * @param[in,out] size     Pointer to current size of buffer `*ptr`. `*size` is
+ *                         changed to `min_size` in case of success or 0 in
+ *                         case of failure
+ * @param[in]     min_size New size of buffer `*ptr`
+ * @see av_fast_malloc()
  */
-void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
+void av_fast_mallocz(void *ptr, unsigned int *size, size_t min_size);
 
 /**
- * Allocate a block of size * nmemb bytes with av_mallocz().
- * @param nmemb Number of elements
- * @param size Size of the single element
- * @return Pointer to the allocated block, NULL if the block cannot
- * be allocated.
- * @see av_mallocz()
- * @see av_malloc_array()
+ * Free a memory block which has been allocated with a function of av_malloc()
+ * or av_realloc() family.
+ *
+ * @param ptr Pointer to the memory block which should be freed.
+ *
+ * @note `ptr = NULL` is explicitly allowed.
+ * @note It is recommended that you use av_freep() instead, to prevent leaving
+ *       behind dangling pointers.
+ * @see av_freep()
  */
-av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
-{
-    if (!size || nmemb >= INT_MAX / size)
-        return NULL;
-    return av_mallocz(nmemb * size);
-}
+void av_free(void *ptr);
+
+/**
+ * Free a memory block which has been allocated with a function of av_malloc()
+ * or av_realloc() family, and set the pointer pointing to it to `NULL`.
+ *
+ * @code{.c}
+ * uint8_t *buf = av_malloc(16);
+ * av_free(buf);
+ * // buf now contains a dangling pointer to freed memory, and accidental
+ * // dereference of buf will result in a use-after-free, which may be a
+ * // security risk.
+ *
+ * uint8_t *buf = av_malloc(16);
+ * av_freep(&buf);
+ * // buf is now NULL, and accidental dereference will only result in a
+ * // NULL-pointer dereference.
+ * @endcode
+ *
+ * @param ptr Pointer to the pointer to the memory block which should be freed
+ * @note `*ptr = NULL` is safe and leads to no action.
+ * @see av_free()
+ */
+void av_freep(void *ptr);
 
 /**
- * Duplicate the string s.
- * @param s string to be duplicated
+ * Duplicate a string.
+ *
+ * @param s String to be duplicated
  * @return Pointer to a newly-allocated string containing a
- * copy of s or NULL if the string cannot be allocated.
+ *         copy of `s` or `NULL` if the string cannot be allocated
+ * @see av_strndup()
  */
 char *av_strdup(const char *s) av_malloc_attrib;
 
 /**
- * Duplicate a substring of the string s.
- * @param s string to be duplicated
- * @param len the maximum length of the resulting string (not counting the
- *            terminating byte).
+ * Duplicate a substring of a string.
+ *
+ * @param s   String to be duplicated
+ * @param len Maximum length of the resulting string (not counting the
+ *            terminating byte)
  * @return Pointer to a newly-allocated string containing a
- * copy of s or NULL if the string cannot be allocated.
+ *         substring of `s` or `NULL` if the string cannot be allocated
  */
 char *av_strndup(const char *s, size_t len) av_malloc_attrib;
 
 /**
- * Duplicate the buffer p.
- * @param p buffer to be duplicated
+ * Duplicate a buffer with av_malloc().
+ *
+ * @param p    Buffer to be duplicated
+ * @param size Size in bytes of the buffer copied
  * @return Pointer to a newly allocated buffer containing a
- * copy of p or NULL if the buffer cannot be allocated.
+ *         copy of `p` or `NULL` if the buffer cannot be allocated
  */
 void *av_memdup(const void *p, size_t size);
 
 /**
- * Free a memory block which has been allocated with av_malloc(z)() or
- * av_realloc() and set the pointer pointing to it to NULL.
- * @param ptr Pointer to the pointer to the memory block which should
- * be freed.
- * @note passing a pointer to a NULL pointer is safe and leads to no action.
- * @see av_free()
+ * Overlapping memcpy() implementation.
+ *
+ * @param dst  Destination buffer
+ * @param back Number of bytes back to start copying (i.e. the initial size of
+ *             the overlapping window); must be > 0
+ * @param cnt  Number of bytes to copy; must be >= 0
+ *
+ * @note `cnt > back` is valid, this will copy the bytes we just copied,
+ *       thus creating a repeating pattern with a period length of `back`.
  */
-void av_freep(void *ptr);
+void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
 
 /**
- * Add an element to a dynamic array.
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_dynarray Dynamic Array
+ *
+ * Utilities to make an array grow when needed.
+ *
+ * Sometimes, the programmer would want to have an array that can grow when
+ * needed. The libavutil dynamic array utilities fill that need.
+ *
+ * libavutil supports two systems of appending elements onto a dynamically
+ * allocated array, the first one storing the pointer to the value in the
+ * array, and the second storing the value directly. In both systems, the
+ * caller is responsible for maintaining a variable containing the length of
+ * the array, as well as freeing of the array after use.
+ *
+ * The first system stores pointers to values in a block of dynamically
+ * allocated memory. Since only pointers are stored, the function does not need
+ * to know the size of the type. Both av_dynarray_add() and
+ * av_dynarray_add_nofree() implement this system.
+ *
+ * @code
+ * type **array = NULL; //< an array of pointers to values
+ * int    nb    = 0;    //< a variable to keep track of the length of the array
+ *
+ * type to_be_added  = ...;
+ * type to_be_added2 = ...;
+ *
+ * av_dynarray_add(&array, &nb, &to_be_added);
+ * if (nb == 0)
+ *     return AVERROR(ENOMEM);
+ *
+ * av_dynarray_add(&array, &nb, &to_be_added2);
+ * if (nb == 0)
+ *     return AVERROR(ENOMEM);
+ *
+ * // Now:
+ * //  nb           == 2
+ * // &to_be_added  == array[0]
+ * // &to_be_added2 == array[1]
+ *
+ * av_freep(&array);
+ * @endcode
+ *
+ * The second system stores the value directly in a block of memory. As a
+ * result, the function has to know the size of the type. av_dynarray2_add()
+ * implements this mechanism.
+ *
+ * @code
+ * type *array = NULL; //< an array of values
+ * int   nb    = 0;    //< a variable to keep track of the length of the array
+ *
+ * type to_be_added  = ...;
+ * type to_be_added2 = ...;
+ *
+ * type *addr = av_dynarray2_add((void **)&array, &nb, sizeof(*array), NULL);
+ * if (!addr)
+ *     return AVERROR(ENOMEM);
+ * memcpy(addr, &to_be_added, sizeof(to_be_added));
+ *
+ * // Shortcut of the above.
+ * type *addr = av_dynarray2_add((void **)&array, &nb, sizeof(*array),
+ *                               (const void *)&to_be_added2);
+ * if (!addr)
+ *     return AVERROR(ENOMEM);
+ *
+ * // Now:
+ * //  nb           == 2
+ * //  to_be_added  == array[0]
+ * //  to_be_added2 == array[1]
+ *
+ * av_freep(&array);
+ * @endcode
+ *
+ * @{
+ */
+
+/**
+ * Add the pointer to an element to a dynamic array.
  *
  * The array to grow is supposed to be an array of pointers to
  * structures, and the element to add must be a pointer to an already
@@ -280,14 +592,14 @@ void av_freep(void *ptr);
  * Therefore, the amortized cost of adding an element is constant.
  *
  * In case of success, the pointer to the array is updated in order to
- * point to the new grown array, and the number pointed to by nb_ptr
+ * point to the new grown array, and the number pointed to by `nb_ptr`
  * is incremented.
- * In case of failure, the array is freed, *tab_ptr is set to NULL and
- * *nb_ptr is set to 0.
+ * In case of failure, the array is freed, `*tab_ptr` is set to `NULL` and
+ * `*nb_ptr` is set to 0.
  *
- * @param tab_ptr pointer to the array to grow
- * @param nb_ptr  pointer to the number of elements in the array
- * @param elem    element to add
+ * @param[in,out] tab_ptr Pointer to the array to grow
+ * @param[in,out] nb_ptr  Pointer to the number of elements in the array
+ * @param[in]     elem    Element to add
  * @see av_dynarray_add_nofree(), av_dynarray2_add()
  */
 void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem);
@@ -299,108 +611,86 @@ void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem);
  * but it doesn't free memory on fails. It returns error code
  * instead and leave current buffer untouched.
  *
- * @param tab_ptr pointer to the array to grow
- * @param nb_ptr  pointer to the number of elements in the array
- * @param elem    element to add
- * @return >=0 on success, negative otherwise.
+ * @return >=0 on success, negative otherwise
  * @see av_dynarray_add(), av_dynarray2_add()
  */
 av_warn_unused_result
 int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem);
 
 /**
- * Add an element of size elem_size to a dynamic array.
+ * Add an element of size `elem_size` to a dynamic array.
  *
  * The array is reallocated when its number of elements reaches powers of 2.
  * Therefore, the amortized cost of adding an element is constant.
  *
  * In case of success, the pointer to the array is updated in order to
- * point to the new grown array, and the number pointed to by nb_ptr
+ * point to the new grown array, and the number pointed to by `nb_ptr`
  * is incremented.
- * In case of failure, the array is freed, *tab_ptr is set to NULL and
- * *nb_ptr is set to 0.
- *
- * @param tab_ptr   pointer to the array to grow
- * @param nb_ptr    pointer to the number of elements in the array
- * @param elem_size size in bytes of the elements in the array
- * @param elem_data pointer to the data of the element to add. If NULL, the space of
- *                  the new added element is not filled.
- * @return          pointer to the data of the element to copy in the new allocated space.
- *                  If NULL, the new allocated space is left uninitialized."
+ * In case of failure, the array is freed, `*tab_ptr` is set to `NULL` and
+ * `*nb_ptr` is set to 0.
+ *
+ * @param[in,out] tab_ptr   Pointer to the array to grow
+ * @param[in,out] nb_ptr    Pointer to the number of elements in the array
+ * @param[in]     elem_size Size in bytes of an element in the array
+ * @param[in]     elem_data Pointer to the data of the element to add. If
+ *                          `NULL`, the space of the newly added element is
+ *                          allocated but left uninitialized.
+ *
+ * @return Pointer to the data of the element to copy in the newly allocated
+ *         space
  * @see av_dynarray_add(), av_dynarray_add_nofree()
  */
 void *av_dynarray2_add(void **tab_ptr, int *nb_ptr, size_t elem_size,
                        const uint8_t *elem_data);
 
 /**
- * Multiply two size_t values checking for overflow.
- * @return  0 if success, AVERROR(EINVAL) if overflow.
- */
-static inline int av_size_mult(size_t a, size_t b, size_t *r)
-{
-    size_t t = a * b;
-    /* Hack inspired from glibc: only try the division if nelem and elsize
-     * are both greater than sqrt(SIZE_MAX). */
-    if ((a | b) >= ((size_t)1 << (sizeof(size_t) * 4)) && a && t / a != b)
-        return AVERROR(EINVAL);
-    *r = t;
-    return 0;
-}
-
-/**
- * Set the maximum size that may me allocated in one block.
+ * @}
  */
-void av_max_alloc(size_t max);
 
 /**
- * deliberately overlapping memcpy implementation
- * @param dst destination buffer
- * @param back how many bytes back we start (the initial size of the overlapping window), must be > 0
- * @param cnt number of bytes to copy, must be >= 0
+ * @defgroup lavu_mem_misc Miscellaneous Functions
+ *
+ * Other functions related to memory allocation.
  *
- * cnt > back is valid, this will copy the bytes we just copied,
- * thus creating a repeating pattern with a period length of back.
+ * @{
  */
-void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
 
 /**
- * Reallocate the given block if it is not large enough, otherwise do nothing.
+ * Multiply two `size_t` values checking for overflow.
  *
- * @see av_realloc
+ * @param[in]  a,b Operands of multiplication
+ * @param[out] r   Pointer to the result of the operation
+ * @return 0 on success, AVERROR(EINVAL) on overflow
  */
-void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size);
+static inline int av_size_mult(size_t a, size_t b, size_t *r)
+{
+    size_t t = a * b;
+    /* Hack inspired from glibc: don't try the division if nelem and elsize
+     * are both less than sqrt(SIZE_MAX). */
+    if ((a | b) >= ((size_t)1 << (sizeof(size_t) * 4)) && a && t / a != b)
+        return AVERROR(EINVAL);
+    *r = t;
+    return 0;
+}
 
 /**
- * Allocate a buffer, reusing the given one if large enough.
+ * Set the maximum size that may be allocated in one block.
  *
- * Contrary to av_fast_realloc the current buffer contents might not be
- * preserved and on error the old buffer is freed, thus no special
- * handling to avoid memleaks is necessary.
+ * The value specified with this function is effective for all libavutil's @ref
+ * lavu_mem_funcs "heap management functions."
  *
- * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
- * @param size size of the buffer *ptr points to
- * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
- *                 *size 0 if an error occurred.
- */
-void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size);
-
-/**
- * Allocate a buffer, reusing the given one if large enough.
+ * By default, the max value is defined as `INT_MAX`.
  *
- * All newly allocated space is initially cleared
- * Contrary to av_fast_realloc the current buffer contents might not be
- * preserved and on error the old buffer is freed, thus no special
- * handling to avoid memleaks is necessary.
+ * @param max Value to be set as the new maximum size
  *
- * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
- * @param size size of the buffer *ptr points to
- * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
- *                 *size 0 if an error occurred.
+ * @warning Exercise extreme caution when using this function. Don't touch
+ *          this if you do not understand the full consequence of doing so.
  */
-void av_fast_mallocz(void *ptr, unsigned int *size, size_t min_size);
+void av_max_alloc(size_t max);
 
 /**
  * @}
+ * @}
  */
 
 #endif /* AVUTIL_MEM_H */
diff --git a/media/ffvpx/libavutil/opt.h b/media/ffvpx/libavutil/opt.h
index 9a76a47f7..9430b989e 100644
--- a/media/ffvpx/libavutil/opt.h
+++ b/media/ffvpx/libavutil/opt.h
@@ -58,7 +58,7 @@
  * The following example illustrates an AVOptions-enabled struct:
  * @code
  * typedef struct test_struct {
- *     AVClass *class;
+ *     const AVClass *class;
  *     int      int_opt;
  *     char    *str_opt;
  *     uint8_t *bin_opt;
@@ -96,7 +96,7 @@
  * @code
  * test_struct *alloc_test_struct(void)
  * {
- *     test_struct *ret = av_malloc(sizeof(*ret));
+ *     test_struct *ret = av_mallocz(sizeof(*ret));
  *     ret->class = &test_class;
  *     av_opt_set_defaults(ret);
  *     return ret;
diff --git a/media/ffvpx/libavutil/parseutils.c b/media/ffvpx/libavutil/parseutils.c
index 6be3730f4..a2464cfc6 100644
--- a/media/ffvpx/libavutil/parseutils.c
+++ b/media/ffvpx/libavutil/parseutils.c
@@ -687,6 +687,7 @@ int av_parse_time(int64_t *timeval, const char *timestr, int duration)
             dt2.tm_sec  = dt.tm_sec;
             dt = dt2;
         }
+        dt.tm_isdst = is_utc ? 0 : -1;
         t = is_utc ? av_timegm(&dt) : mktime(&dt);
         t += tzoffset;
     }
diff --git a/media/ffvpx/libavutil/pixdesc.c b/media/ffvpx/libavutil/pixdesc.c
index 0dffa4dbd..b715fce15 100644
--- a/media/ffvpx/libavutil/pixdesc.c
+++ b/media/ffvpx/libavutil/pixdesc.c
@@ -1974,6 +1974,10 @@ static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
         .name = "qsv",
         .flags = AV_PIX_FMT_FLAG_HWACCEL,
     },
+    [AV_PIX_FMT_MEDIACODEC] = {
+        .name = "mediacodec",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
     [AV_PIX_FMT_MMAL] = {
         .name = "mmal",
         .flags = AV_PIX_FMT_FLAG_HWACCEL,
@@ -2093,33 +2097,73 @@ static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif
 
-static const char *color_range_names[AVCOL_RANGE_NB] = {
-    "unknown", "tv", "pc",
+static const char *color_range_names[] = {
+    [AVCOL_RANGE_UNSPECIFIED] = "unknown",
+    [AVCOL_RANGE_MPEG] = "tv",
+    [AVCOL_RANGE_JPEG] = "pc",
 };
 
 static const char *color_primaries_names[AVCOL_PRI_NB] = {
-    "reserved", "bt709", "unknown", "reserved", "bt470m",
-    "bt470bg", "smpte170m", "smpte240m", "film", "bt2020",
-    "smpte428-1",
+    [AVCOL_PRI_RESERVED0] = "reserved",
+    [AVCOL_PRI_BT709] = "bt709",
+    [AVCOL_PRI_UNSPECIFIED] = "unknown",
+    [AVCOL_PRI_RESERVED] = "reserved",
+    [AVCOL_PRI_BT470M] = "bt470m",
+    [AVCOL_PRI_BT470BG] = "bt470bg",
+    [AVCOL_PRI_SMPTE170M] = "smpte170m",
+    [AVCOL_PRI_SMPTE240M] = "smpte240m",
+    [AVCOL_PRI_FILM] = "film",
+    [AVCOL_PRI_BT2020] = "bt2020",
+    [AVCOL_PRI_SMPTEST428_1] = "smpte428-1",
+    [AVCOL_PRI_SMPTE431] = "smpte431",
+    [AVCOL_PRI_SMPTE432] = "smpte432",
 };
 
-static const char *color_transfer_names[AVCOL_TRC_NB] = {
-    "reserved", "bt709", "unknown", "reserved", "bt470m",
-    "bt470bg", "smpte170m", "smpte240m", "linear", "log100",
-    "log316", "iec61966-2-4", "bt1361e", "iec61966-2-1",
-    "bt2020-10", "bt2020-20", "smpte2084", "smpte428-1",
-    "arib-std-b67"
+static const char *color_transfer_names[] = {
+    [AVCOL_TRC_RESERVED0] = "reserved",
+    [AVCOL_TRC_BT709] = "bt709",
+    [AVCOL_TRC_UNSPECIFIED] = "unknown",
+    [AVCOL_TRC_RESERVED] = "reserved",
+    [AVCOL_TRC_GAMMA22] = "bt470m",
+    [AVCOL_TRC_GAMMA28] = "bt470bg",
+    [AVCOL_TRC_SMPTE170M] = "smpte170m",
+    [AVCOL_TRC_SMPTE240M] = "smpte240m",
+    [AVCOL_TRC_LINEAR] = "linear",
+    [AVCOL_TRC_LOG] = "log100",
+    [AVCOL_TRC_LOG_SQRT] = "log316",
+    [AVCOL_TRC_IEC61966_2_4] = "iec61966-2-4",
+    [AVCOL_TRC_BT1361_ECG] = "bt1361e",
+    [AVCOL_TRC_IEC61966_2_1] = "iec61966-2-1",
+    [AVCOL_TRC_BT2020_10] = "bt2020-10",
+    [AVCOL_TRC_BT2020_12] = "bt2020-20",
+    [AVCOL_TRC_SMPTEST2084] = "smpte2084",
+    [AVCOL_TRC_SMPTEST428_1] = "smpte428-1",
+    [AVCOL_TRC_ARIB_STD_B67] = "arib-std-b67",
 };
 
-static const char *color_space_names[AVCOL_SPC_NB] = {
-    "gbr", "bt709", "unknown", "reserved", "fcc",
-    "bt470bg", "smpte170m", "smpte240m", "ycgco",
-    "bt2020nc", "bt2020c",
+static const char *color_space_names[] = {
+    [AVCOL_SPC_RGB] = "gbr",
+    [AVCOL_SPC_BT709] = "bt709",
+    [AVCOL_SPC_UNSPECIFIED] = "unknown",
+    [AVCOL_SPC_RESERVED] = "reserved",
+    [AVCOL_SPC_FCC] = "fcc",
+    [AVCOL_SPC_BT470BG] = "bt470bg",
+    [AVCOL_SPC_SMPTE170M] = "smpte170m",
+    [AVCOL_SPC_SMPTE240M] = "smpte240m",
+    [AVCOL_SPC_YCOCG] = "ycgco",
+    [AVCOL_SPC_BT2020_NCL] = "bt2020nc",
+    [AVCOL_SPC_BT2020_CL] = "bt2020c",
+    [AVCOL_SPC_SMPTE2085] = "smpte2085",
 };
 
-static const char *chroma_location_names[AVCHROMA_LOC_NB] = {
-    "unspecified", "left", "center", "topleft",
-    "top", "bottomleft", "bottom",
+static const char *chroma_location_names[] = {
+    [AVCHROMA_LOC_UNSPECIFIED] = "unspecified",
+    [AVCHROMA_LOC_LEFT] = "left",
+    [AVCHROMA_LOC_CENTER] = "center",
+    [AVCHROMA_LOC_TOPLEFT] = "topleft",
+    [AVCHROMA_LOC_TOP] = "top",
+    [AVCHROMA_LOC_BOTTOMLEFT] = "bottomleft",
+    [AVCHROMA_LOC_BOTTOM] = "bottom",
 };
 
 static enum AVPixelFormat get_pix_fmt_internal(const char *name)
diff --git a/media/ffvpx/libavutil/pixdesc.h b/media/ffvpx/libavutil/pixdesc.h
index 3b0bcdb3d..a8ad58891 100644
--- a/media/ffvpx/libavutil/pixdesc.h
+++ b/media/ffvpx/libavutil/pixdesc.h
@@ -173,78 +173,6 @@ typedef struct AVPixFmtDescriptor {
 #define AV_PIX_FMT_FLAG_ALPHA        (1 << 7)
 
 /**
- * Read a line from an image, and write the values of the
- * pixel format component c to dst.
- *
- * @param data the array containing the pointers to the planes of the image
- * @param linesize the array containing the linesizes of the image
- * @param desc the pixel format descriptor for the image
- * @param x the horizontal coordinate of the first pixel to read
- * @param y the vertical coordinate of the first pixel to read
- * @param w the width of the line to read, that is the number of
- * values to write to dst
- * @param read_pal_component if not zero and the format is a paletted
- * format writes the values corresponding to the palette
- * component c in data[1] to dst, rather than the palette indexes in
- * data[0]. The behavior is undefined if the format is not paletted.
- */
-void av_read_image_line(uint16_t *dst, const uint8_t *data[4],
-                        const int linesize[4], const AVPixFmtDescriptor *desc,
-                        int x, int y, int c, int w, int read_pal_component);
-
-/**
- * Write the values from src to the pixel format component c of an
- * image line.
- *
- * @param src array containing the values to write
- * @param data the array containing the pointers to the planes of the
- * image to write into. It is supposed to be zeroed.
- * @param linesize the array containing the linesizes of the image
- * @param desc the pixel format descriptor for the image
- * @param x the horizontal coordinate of the first pixel to write
- * @param y the vertical coordinate of the first pixel to write
- * @param w the width of the line to write, that is the number of
- * values to write to the image line
- */
-void av_write_image_line(const uint16_t *src, uint8_t *data[4],
-                         const int linesize[4], const AVPixFmtDescriptor *desc,
-                         int x, int y, int c, int w);
-
-/**
- * Return the pixel format corresponding to name.
- *
- * If there is no pixel format with name name, then looks for a
- * pixel format with the name corresponding to the native endian
- * format of name.
- * For example in a little-endian system, first looks for "gray16",
- * then for "gray16le".
- *
- * Finally if no pixel format has been found, returns AV_PIX_FMT_NONE.
- */
-enum AVPixelFormat av_get_pix_fmt(const char *name);
-
-/**
- * Return the short name for a pixel format, NULL in case pix_fmt is
- * unknown.
- *
- * @see av_get_pix_fmt(), av_get_pix_fmt_string()
- */
-const char *av_get_pix_fmt_name(enum AVPixelFormat pix_fmt);
-
-/**
- * Print in buf the string corresponding to the pixel format with
- * number pix_fmt, or a header if pix_fmt is negative.
- *
- * @param buf the buffer where to write the string
- * @param buf_size the size of buf
- * @param pix_fmt the number of the pixel format to print the
- * corresponding info string, or a negative value to print the
- * corresponding header.
- */
-char *av_get_pix_fmt_string(char *buf, int buf_size,
-                            enum AVPixelFormat pix_fmt);
-
-/**
  * Return the number of bits per pixel used by the pixel format
  * described by pixdesc. Note that this is not the same as the number
  * of bits per sample.
@@ -307,6 +235,103 @@ int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
 int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt);
 
 /**
+ * @return the name for provided color range or NULL if unknown.
+ */
+const char *av_color_range_name(enum AVColorRange range);
+
+/**
+ * @return the name for provided color primaries or NULL if unknown.
+ */
+const char *av_color_primaries_name(enum AVColorPrimaries primaries);
+
+/**
+ * @return the name for provided color transfer or NULL if unknown.
+ */
+const char *av_color_transfer_name(enum AVColorTransferCharacteristic transfer);
+
+/**
+ * @return the name for provided color space or NULL if unknown.
+ */
+const char *av_color_space_name(enum AVColorSpace space);
+
+/**
+ * @return the name for provided chroma location or NULL if unknown.
+ */
+const char *av_chroma_location_name(enum AVChromaLocation location);
+
+/**
+ * Return the pixel format corresponding to name.
+ *
+ * If there is no pixel format with name name, then looks for a
+ * pixel format with the name corresponding to the native endian
+ * format of name.
+ * For example in a little-endian system, first looks for "gray16",
+ * then for "gray16le".
+ *
+ * Finally if no pixel format has been found, returns AV_PIX_FMT_NONE.
+ */
+enum AVPixelFormat av_get_pix_fmt(const char *name);
+
+/**
+ * Return the short name for a pixel format, NULL in case pix_fmt is
+ * unknown.
+ *
+ * @see av_get_pix_fmt(), av_get_pix_fmt_string()
+ */
+const char *av_get_pix_fmt_name(enum AVPixelFormat pix_fmt);
+
+/**
+ * Print in buf the string corresponding to the pixel format with
+ * number pix_fmt, or a header if pix_fmt is negative.
+ *
+ * @param buf the buffer where to write the string
+ * @param buf_size the size of buf
+ * @param pix_fmt the number of the pixel format to print the
+ * corresponding info string, or a negative value to print the
+ * corresponding header.
+ */
+char *av_get_pix_fmt_string(char *buf, int buf_size,
+                            enum AVPixelFormat pix_fmt);
+
+/**
+ * Read a line from an image, and write the values of the
+ * pixel format component c to dst.
+ *
+ * @param data the array containing the pointers to the planes of the image
+ * @param linesize the array containing the linesizes of the image
+ * @param desc the pixel format descriptor for the image
+ * @param x the horizontal coordinate of the first pixel to read
+ * @param y the vertical coordinate of the first pixel to read
+ * @param w the width of the line to read, that is the number of
+ * values to write to dst
+ * @param read_pal_component if not zero and the format is a paletted
+ * format writes the values corresponding to the palette
+ * component c in data[1] to dst, rather than the palette indexes in
+ * data[0]. The behavior is undefined if the format is not paletted.
+ */
+void av_read_image_line(uint16_t *dst, const uint8_t *data[4],
+                        const int linesize[4], const AVPixFmtDescriptor *desc,
+                        int x, int y, int c, int w, int read_pal_component);
+
+/**
+ * Write the values from src to the pixel format component c of an
+ * image line.
+ *
+ * @param src array containing the values to write
+ * @param data the array containing the pointers to the planes of the
+ * image to write into. It is supposed to be zeroed.
+ * @param linesize the array containing the linesizes of the image
+ * @param desc the pixel format descriptor for the image
+ * @param x the horizontal coordinate of the first pixel to write
+ * @param y the vertical coordinate of the first pixel to write
+ * @param w the width of the line to write, that is the number of
+ * values to write to the image line
+ */
+void av_write_image_line(const uint16_t *src, uint8_t *data[4],
+                         const int linesize[4], const AVPixFmtDescriptor *desc,
+                         int x, int y, int c, int w);
+
+/**
  * Utility function to swap the endianness of a pixel format.
  *
  * @param[in]  pix_fmt the pixel format
@@ -366,29 +391,4 @@ int av_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt,
 enum AVPixelFormat av_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
                                              enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
 
-/**
- * @return the name for provided color range or NULL if unknown.
- */
-const char *av_color_range_name(enum AVColorRange range);
-
-/**
- * @return the name for provided color primaries or NULL if unknown.
- */
-const char *av_color_primaries_name(enum AVColorPrimaries primaries);
-
-/**
- * @return the name for provided color transfer or NULL if unknown.
- */
-const char *av_color_transfer_name(enum AVColorTransferCharacteristic transfer);
-
-/**
- * @return the name for provided color space or NULL if unknown.
- */
-const char *av_color_space_name(enum AVColorSpace space);
-
-/**
- * @return the name for provided chroma location or NULL if unknown.
- */
-const char *av_chroma_location_name(enum AVChromaLocation location);
-
 #endif /* AVUTIL_PIXDESC_H */
diff --git a/media/ffvpx/libavutil/pixfmt.h b/media/ffvpx/libavutil/pixfmt.h
index 0ed01c484..7a3f68be7 100644
--- a/media/ffvpx/libavutil/pixfmt.h
+++ b/media/ffvpx/libavutil/pixfmt.h
@@ -77,7 +77,7 @@ enum AVPixelFormat {
 #if FF_API_XVMC
     AV_PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing
     AV_PIX_FMT_XVMC_MPEG2_IDCT,
-#define AV_PIX_FMT_XVMC AV_PIX_FMT_XVMC_MPEG2_IDCT
+    AV_PIX_FMT_XVMC = AV_PIX_FMT_XVMC_MPEG2_IDCT,
 #endif /* FF_API_XVMC */
     AV_PIX_FMT_UYVY422,   ///< packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
     AV_PIX_FMT_UYYVYY411, ///< packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
@@ -178,6 +178,7 @@ enum AVPixelFormat {
     AV_PIX_FMT_YUV422P9LE, ///< planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
     AV_PIX_FMT_VDA_VLD,    ///< hardware decoding through VDA
     AV_PIX_FMT_GBRP,      ///< planar GBR 4:4:4 24bpp
+    AV_PIX_FMT_GBR24P = AV_PIX_FMT_GBRP, // alias for #AV_PIX_FMT_GBRP
     AV_PIX_FMT_GBRP9BE,   ///< planar GBR 4:4:4 27bpp, big-endian
     AV_PIX_FMT_GBRP9LE,   ///< planar GBR 4:4:4 27bpp, little-endian
     AV_PIX_FMT_GBRP10BE,  ///< planar GBR 4:4:4 30bpp, big-endian
@@ -303,11 +304,10 @@ enum AVPixelFormat {
     AV_PIX_FMT_GBRAP10BE,  ///< planar GBR 4:4:4:4 40bpp, big-endian
     AV_PIX_FMT_GBRAP10LE,  ///< planar GBR 4:4:4:4 40bpp, little-endian
 
-    AV_PIX_FMT_NB,        ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
-};
+    AV_PIX_FMT_MEDIACODEC, ///< hardware decoding through MediaCodec
 
-#define AV_PIX_FMT_Y400A AV_PIX_FMT_GRAY8A
-#define AV_PIX_FMT_GBR24P AV_PIX_FMT_GBRP
+    AV_PIX_FMT_NB         ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
+};
 
 #if AV_HAVE_BIGENDIAN
 #   define AV_PIX_FMT_NE(be, le) AV_PIX_FMT_##be
@@ -398,8 +398,10 @@ enum AVColorPrimaries {
     AVCOL_PRI_SMPTE240M   = 7,  ///< functionally identical to above
     AVCOL_PRI_FILM        = 8,  ///< colour filters using Illuminant C
     AVCOL_PRI_BT2020      = 9,  ///< ITU-R BT2020
-    AVCOL_PRI_SMPTEST428_1= 10, ///< SMPTE ST 428-1 (CIE 1931 XYZ)
-    AVCOL_PRI_NB,               ///< Not part of ABI
+    AVCOL_PRI_SMPTEST428_1 = 10, ///< SMPTE ST 428-1 (CIE 1931 XYZ)
+    AVCOL_PRI_SMPTE431    = 11, ///< SMPTE ST 431-2 (2011)
+    AVCOL_PRI_SMPTE432    = 12, ///< SMPTE ST 432-1 D65 (2010)
+    AVCOL_PRI_NB                ///< Not part of ABI
 };
 
 /**
@@ -425,7 +427,7 @@ enum AVColorTransferCharacteristic {
     AVCOL_TRC_SMPTEST2084  = 16, ///< SMPTE ST 2084 for 10-, 12-, 14- and 16-bit systems
     AVCOL_TRC_SMPTEST428_1 = 17, ///< SMPTE ST 428-1
     AVCOL_TRC_ARIB_STD_B67 = 18, ///< ARIB STD-B67, known as "Hybrid log-gamma"
-    AVCOL_TRC_NB,                ///< Not part of ABI
+    AVCOL_TRC_NB                 ///< Not part of ABI
 };
 
 /**
@@ -443,7 +445,8 @@ enum AVColorSpace {
     AVCOL_SPC_YCOCG       = 8,  ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
     AVCOL_SPC_BT2020_NCL  = 9,  ///< ITU-R BT2020 non-constant luminance system
     AVCOL_SPC_BT2020_CL   = 10, ///< ITU-R BT2020 constant luminance system
-    AVCOL_SPC_NB,               ///< Not part of ABI
+    AVCOL_SPC_SMPTE2085   = 11, ///< SMPTE 2085, Y'D'zD'x
+    AVCOL_SPC_NB                ///< Not part of ABI
 };
 #define AVCOL_SPC_YCGCO AVCOL_SPC_YCOCG
 
@@ -455,7 +458,7 @@ enum AVColorRange {
     AVCOL_RANGE_UNSPECIFIED = 0,
     AVCOL_RANGE_MPEG        = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
     AVCOL_RANGE_JPEG        = 2, ///< the normal     2^n-1   "JPEG" YUV ranges
-    AVCOL_RANGE_NB,              ///< Not part of ABI
+    AVCOL_RANGE_NB               ///< Not part of ABI
 };
 
 /**
@@ -481,7 +484,7 @@ enum AVChromaLocation {
     AVCHROMA_LOC_TOP         = 4,
     AVCHROMA_LOC_BOTTOMLEFT  = 5,
     AVCHROMA_LOC_BOTTOM      = 6,
-    AVCHROMA_LOC_NB,              ///< Not part of ABI
+    AVCHROMA_LOC_NB               ///< Not part of ABI
 };
 
 #endif /* AVUTIL_PIXFMT_H */
diff --git a/media/ffvpx/libavutil/rational.h b/media/ffvpx/libavutil/rational.h
index 289746968..5c6b67b4e 100644
--- a/media/ffvpx/libavutil/rational.h
+++ b/media/ffvpx/libavutil/rational.h
@@ -21,7 +21,8 @@
 
 /**
  * @file
- * rational numbers
+ * @ingroup lavu_math_rational
+ * Utilties for rational number calculation.
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
@@ -33,22 +34,39 @@
 #include "attributes.h"
 
 /**
- * @addtogroup lavu_math
+ * @defgroup lavu_math_rational AVRational
+ * @ingroup lavu_math
+ * Rational number calculation.
+ *
+ * While rational numbers can be expressed as floating-point numbers, the
+ * conversion process is a lossy one, so are floating-point operations. On the
+ * other hand, the nature of FFmpeg demands highly accurate calculation of
+ * timestamps. This set of rational number utilities serves as a generic
+ * interface for manipulating rational numbers as pairs of numerators and
+ * denominators.
+ *
+ * Many of the functions that operate on AVRational's have the suffix `_q`, in
+ * reference to the mathematical symbol "ℚ" (Q) which denotes the set of all
+ * rational numbers.
+ *
  * @{
  */
 
 /**
- * rational number numerator/denominator
+ * Rational number (pair of numerator and denominator).
  */
 typedef struct AVRational{
-    int num; ///< numerator
-    int den; ///< denominator
+    int num; ///< Numerator
+    int den; ///< Denominator
 } AVRational;
 
 /**
- * Create a rational.
+ * Create an AVRational.
+ *
  * Useful for compilers that do not support compound literals.
- * @note  The return value is not reduced.
+ *
+ * @note The return value is not reduced.
+ * @see av_reduce()
  */
 static inline AVRational av_make_q(int num, int den)
 {
@@ -58,10 +76,15 @@ static inline AVRational av_make_q(int num, int den)
 
 /**
  * Compare two rationals.
- * @param a first rational
- * @param b second rational
- * @return 0 if a==b, 1 if a>b, -1 if a<b, and INT_MIN if one of the
- * values is of the form 0/0
+ *
+ * @param a First rational
+ * @param b Second rational
+ *
+ * @return One of the following values:
+ *         - 0 if `a == b`
+ *         - 1 if `a > b`
+ *         - -1 if `a < b`
+ *         - `INT_MIN` if one of the values is of the form `0 / 0`
  */
 static inline int av_cmp_q(AVRational a, AVRational b){
     const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
@@ -73,9 +96,10 @@ static inline int av_cmp_q(AVRational a, AVRational b){
 }
 
 /**
- * Convert rational to double.
- * @param a rational to convert
- * @return (double) a
+ * Convert an AVRational to a `double`.
+ * @param a AVRational to convert
+ * @return `a` in floating-point form
+ * @see av_d2q()
  */
 static inline double av_q2d(AVRational a){
     return a.num / (double) a.den;
@@ -83,44 +107,46 @@ static inline double av_q2d(AVRational a){
 
 /**
  * Reduce a fraction.
+ *
  * This is useful for framerate calculations.
- * @param dst_num destination numerator
- * @param dst_den destination denominator
- * @param num source numerator
- * @param den source denominator
- * @param max the maximum allowed for dst_num & dst_den
- * @return 1 if exact, 0 otherwise
+ *
+ * @param[out] dst_num Destination numerator
+ * @param[out] dst_den Destination denominator
+ * @param[in]      num Source numerator
+ * @param[in]      den Source denominator
+ * @param[in]      max Maximum allowed values for `dst_num` & `dst_den`
+ * @return 1 if the operation is exact, 0 otherwise
  */
 int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max);
 
 /**
  * Multiply two rationals.
- * @param b first rational
- * @param c second rational
+ * @param b First rational
+ * @param c Second rational
  * @return b*c
  */
 AVRational av_mul_q(AVRational b, AVRational c) av_const;
 
 /**
  * Divide one rational by another.
- * @param b first rational
- * @param c second rational
+ * @param b First rational
+ * @param c Second rational
  * @return b/c
  */
 AVRational av_div_q(AVRational b, AVRational c) av_const;
 
 /**
  * Add two rationals.
- * @param b first rational
- * @param c second rational
+ * @param b First rational
+ * @param c Second rational
  * @return b+c
  */
 AVRational av_add_q(AVRational b, AVRational c) av_const;
 
 /**
  * Subtract one rational from another.
- * @param b first rational
- * @param c second rational
+ * @param b First rational
+ * @param c Second rational
  * @return b-c
  */
 AVRational av_sub_q(AVRational b, AVRational c) av_const;
@@ -138,31 +164,46 @@ static av_always_inline AVRational av_inv_q(AVRational q)
 
 /**
  * Convert a double precision floating point number to a rational.
- * inf is expressed as {1,0} or {-1,0} depending on the sign.
  *
- * @param d double to convert
- * @param max the maximum allowed numerator and denominator
- * @return (AVRational) d
+ * In case of infinity, the returned value is expressed as `{1, 0}` or
+ * `{-1, 0}` depending on the sign.
+ *
+ * @param d   `double` to convert
+ * @param max Maximum allowed numerator and denominator
+ * @return `d` in AVRational form
+ * @see av_q2d()
  */
 AVRational av_d2q(double d, int max) av_const;
 
 /**
- * @return 1 if q1 is nearer to q than q2, -1 if q2 is nearer
- * than q1, 0 if they have the same distance.
+ * Find which of the two rationals is closer to another rational.
+ *
+ * @param q     Rational to be compared against
+ * @param q1,q2 Rationals to be tested
+ * @return One of the following values:
+ *         - 1 if `q1` is nearer to `q` than `q2`
+ *         - -1 if `q2` is nearer to `q` than `q1`
+ *         - 0 if they have the same distance
  */
 int av_nearer_q(AVRational q, AVRational q1, AVRational q2);
 
 /**
- * Find the nearest value in q_list to q.
- * @param q_list an array of rationals terminated by {0, 0}
- * @return the index of the nearest value found in the array
+ * Find the value in a list of rationals nearest a given reference rational.
+ *
+ * @param q      Reference rational
+ * @param q_list Array of rationals terminated by `{0, 0}`
+ * @return Index of the nearest value found in the array
  */
 int av_find_nearest_q_idx(AVRational q, const AVRational* q_list);
 
 /**
- * Converts a AVRational to a IEEE 32bit float.
+ * Convert an AVRational to a IEEE 32-bit `float` expressed in fixed-point
+ * format.
  *
- * The float is returned in a uint32_t and its value is platform indepenant.
+ * @param q Rational to be converted
+ * @return Equivalent floating-point value, expressed as an unsigned 32-bit
+ *         integer.
+ * @note The returned value is platform-indepedant.
  */
 uint32_t av_q2intfloat(AVRational q);
 
diff --git a/media/ffvpx/libavutil/samplefmt.c b/media/ffvpx/libavutil/samplefmt.c
index c605b5ebd..fc077f644 100644
--- a/media/ffvpx/libavutil/samplefmt.c
+++ b/media/ffvpx/libavutil/samplefmt.c
@@ -35,11 +35,13 @@ static const SampleFmtInfo sample_fmt_info[AV_SAMPLE_FMT_NB] = {
     [AV_SAMPLE_FMT_U8]   = { .name =   "u8", .bits =  8, .planar = 0, .altform = AV_SAMPLE_FMT_U8P  },
     [AV_SAMPLE_FMT_S16]  = { .name =  "s16", .bits = 16, .planar = 0, .altform = AV_SAMPLE_FMT_S16P },
     [AV_SAMPLE_FMT_S32]  = { .name =  "s32", .bits = 32, .planar = 0, .altform = AV_SAMPLE_FMT_S32P },
+    [AV_SAMPLE_FMT_S64]  = { .name =  "s64", .bits = 64, .planar = 0, .altform = AV_SAMPLE_FMT_S64P },
     [AV_SAMPLE_FMT_FLT]  = { .name =  "flt", .bits = 32, .planar = 0, .altform = AV_SAMPLE_FMT_FLTP },
     [AV_SAMPLE_FMT_DBL]  = { .name =  "dbl", .bits = 64, .planar = 0, .altform = AV_SAMPLE_FMT_DBLP },
     [AV_SAMPLE_FMT_U8P]  = { .name =  "u8p", .bits =  8, .planar = 1, .altform = AV_SAMPLE_FMT_U8   },
     [AV_SAMPLE_FMT_S16P] = { .name = "s16p", .bits = 16, .planar = 1, .altform = AV_SAMPLE_FMT_S16  },
     [AV_SAMPLE_FMT_S32P] = { .name = "s32p", .bits = 32, .planar = 1, .altform = AV_SAMPLE_FMT_S32  },
+    [AV_SAMPLE_FMT_S64P] = { .name = "s64p", .bits = 64, .planar = 1, .altform = AV_SAMPLE_FMT_S64  },
     [AV_SAMPLE_FMT_FLTP] = { .name = "fltp", .bits = 32, .planar = 1, .altform = AV_SAMPLE_FMT_FLT  },
     [AV_SAMPLE_FMT_DBLP] = { .name = "dblp", .bits = 64, .planar = 1, .altform = AV_SAMPLE_FMT_DBL  },
 };
diff --git a/media/ffvpx/libavutil/samplefmt.h b/media/ffvpx/libavutil/samplefmt.h
index 57da2784d..8cd43ae85 100644
--- a/media/ffvpx/libavutil/samplefmt.h
+++ b/media/ffvpx/libavutil/samplefmt.h
@@ -68,6 +68,8 @@ enum AVSampleFormat {
     AV_SAMPLE_FMT_S32P,        ///< signed 32 bits, planar
     AV_SAMPLE_FMT_FLTP,        ///< float, planar
     AV_SAMPLE_FMT_DBLP,        ///< double, planar
+    AV_SAMPLE_FMT_S64,         ///< signed 64 bits
+    AV_SAMPLE_FMT_S64P,        ///< signed 64 bits, planar
 
     AV_SAMPLE_FMT_NB           ///< Number of sample formats. DO NOT USE if linking dynamically
 };
diff --git a/media/ffvpx/libavutil/timestamp.h b/media/ffvpx/libavutil/timestamp.h
index f010a7ee3..e082f01b4 100644
--- a/media/ffvpx/libavutil/timestamp.h
+++ b/media/ffvpx/libavutil/timestamp.h
@@ -43,7 +43,7 @@
 static inline char *av_ts_make_string(char *buf, int64_t ts)
 {
     if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
-    else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64, ts);
+    else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%" PRId64, ts);
     return buf;
 }
 
diff --git a/media/ffvpx/libavutil/utils.c b/media/ffvpx/libavutil/utils.c
index f409f3221..36e4dd5fd 100644
--- a/media/ffvpx/libavutil/utils.c
+++ b/media/ffvpx/libavutil/utils.c
@@ -125,3 +125,16 @@ AVRational av_get_time_base_q(void)
 {
     return (AVRational){1, AV_TIME_BASE};
 }
+
+void av_assert0_fpu(void) {
+#if HAVE_MMX_INLINE
+    uint16_t state[14];
+     __asm volatile (
+        "fstenv %0 \n\t"
+        : "+m" (state)
+        :
+        : "memory"
+    );
+    av_assert0((state[4] & 3) == 3);
+#endif
+}
diff --git a/media/ffvpx/libavutil/version.h b/media/ffvpx/libavutil/version.h
index 07618fc0b..bdd310f85 100644
--- a/media/ffvpx/libavutil/version.h
+++ b/media/ffvpx/libavutil/version.h
@@ -18,6 +18,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+/**
+ * @file
+ * @ingroup lavu
+ * Libavutil version macros
+ */
+
 #ifndef AVUTIL_VERSION_H
 #define AVUTIL_VERSION_H
 
@@ -29,6 +35,21 @@
  * Useful to check and match library version in order to maintain
  * backward compatibility.
  *
+ * The FFmpeg libraries follow a versioning sheme very similar to
+ * Semantic Versioning (http://semver.org/)
+ * The difference is that the component called PATCH is called MICRO in FFmpeg
+ * and its value is reset to 100 instead of 0 to keep it above or equal to 100.
+ * Also we do not increase MICRO for every bugfix or change in git master.
+ *
+ * Prior to FFmpeg 3.2 point releases did not change any lib version number to
+ * avoid aliassing different git master checkouts.
+ * Starting with FFmpeg 3.2, the released library versions will occupy
+ * a separate MAJOR.MINOR that is not used on the master development branch.
+ * That is if we branch a release of master 55.10.123 we will bump to 55.11.100
+ * for the release and master will continue at 55.12.100 after it. Each new
+ * point release will then bump the MICRO improving the usefulness of the lib
+ * versions.
+ *
  * @{
  */
 
@@ -49,12 +70,6 @@
  */
 
 /**
- * @file
- * @ingroup lavu
- * Libavutil version macros
- */
-
-/**
  * @defgroup lavu_ver Version and Build diagnostics
  *
  * Macros and function useful to check at compiletime and at runtime
@@ -64,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  55
-#define LIBAVUTIL_VERSION_MINOR  28
+#define LIBAVUTIL_VERSION_MINOR  34
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
@@ -78,9 +93,7 @@
 #define LIBAVUTIL_IDENT         "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
 
 /**
- * @}
- *
- * @defgroup depr_guards Deprecation guards
+ * @defgroup lavu_depr_guards Deprecation Guards
  * FF_API_* defines may be placed below to indicate public API that will be
  * dropped at a future version bump. The defines themselves are not part of
  * the public API and may change, break or disappear at any time.
@@ -119,10 +132,14 @@
 #ifndef FF_API_CRC_BIG_TABLE
 #define FF_API_CRC_BIG_TABLE            (LIBAVUTIL_VERSION_MAJOR < 56)
 #endif
+#ifndef FF_API_PKT_PTS
+#define FF_API_PKT_PTS                  (LIBAVUTIL_VERSION_MAJOR < 56)
+#endif
 
 
 /**
  * @}
+ * @}
  */
 
 #endif /* AVUTIL_VERSION_H */
diff --git a/media/ffvpx/libavutil/x86/asm.h b/media/ffvpx/libavutil/x86/asm.h
index 109b65e54..9bff42d62 100644
--- a/media/ffvpx/libavutil/x86/asm.h
+++ b/media/ffvpx/libavutil/x86/asm.h
@@ -28,46 +28,46 @@ typedef struct xmm_reg { uint64_t a, b; } xmm_reg;
 typedef struct ymm_reg { uint64_t a, b, c, d; } ymm_reg;
 
 #if ARCH_X86_64
-#    define OPSIZE "q"
-#    define REG_a "rax"
-#    define REG_b "rbx"
-#    define REG_c "rcx"
-#    define REG_d "rdx"
-#    define REG_D "rdi"
-#    define REG_S "rsi"
-#    define PTR_SIZE "8"
+#    define FF_OPSIZE "q"
+#    define FF_REG_a "rax"
+#    define FF_REG_b "rbx"
+#    define FF_REG_c "rcx"
+#    define FF_REG_d "rdx"
+#    define FF_REG_D "rdi"
+#    define FF_REG_S "rsi"
+#    define FF_PTR_SIZE "8"
 typedef int64_t x86_reg;
 
-/* REG_SP is defined in Solaris sys headers, so use REG_sp */
-#    define REG_sp "rsp"
-#    define REG_BP "rbp"
-#    define REGBP   rbp
-#    define REGa    rax
-#    define REGb    rbx
-#    define REGc    rcx
-#    define REGd    rdx
-#    define REGSP   rsp
+/* FF_REG_SP is defined in Solaris sys headers, so use FF_REG_sp */
+#    define FF_REG_sp "rsp"
+#    define FF_REG_BP "rbp"
+#    define FF_REGBP   rbp
+#    define FF_REGa    rax
+#    define FF_REGb    rbx
+#    define FF_REGc    rcx
+#    define FF_REGd    rdx
+#    define FF_REGSP   rsp
 
 #elif ARCH_X86_32
 
-#    define OPSIZE "l"
-#    define REG_a "eax"
-#    define REG_b "ebx"
-#    define REG_c "ecx"
-#    define REG_d "edx"
-#    define REG_D "edi"
-#    define REG_S "esi"
-#    define PTR_SIZE "4"
+#    define FF_OPSIZE "l"
+#    define FF_REG_a "eax"
+#    define FF_REG_b "ebx"
+#    define FF_REG_c "ecx"
+#    define FF_REG_d "edx"
+#    define FF_REG_D "edi"
+#    define FF_REG_S "esi"
+#    define FF_PTR_SIZE "4"
 typedef int32_t x86_reg;
 
-#    define REG_sp "esp"
-#    define REG_BP "ebp"
-#    define REGBP   ebp
-#    define REGa    eax
-#    define REGb    ebx
-#    define REGc    ecx
-#    define REGd    edx
-#    define REGSP   esp
+#    define FF_REG_sp "esp"
+#    define FF_REG_BP "ebp"
+#    define FF_REGBP   ebp
+#    define FF_REGa    eax
+#    define FF_REGb    ebx
+#    define FF_REGc    ecx
+#    define FF_REGd    edx
+#    define FF_REGSP   esp
 #else
 typedef int x86_reg;
 #endif
diff --git a/media/ffvpx/libavutil/x86/cpu.c b/media/ffvpx/libavutil/x86/cpu.c
index b9f239be4..f3a49c677 100644
--- a/media/ffvpx/libavutil/x86/cpu.c
+++ b/media/ffvpx/libavutil/x86/cpu.c
@@ -41,9 +41,9 @@
 /* ebx saving is necessary for PIC. gcc seems unable to see it alone */
 #define cpuid(index, eax, ebx, ecx, edx)                        \
     __asm__ volatile (                                          \
-        "mov    %%"REG_b", %%"REG_S" \n\t"                      \
+        "mov    %%"FF_REG_b", %%"FF_REG_S" \n\t"                \
         "cpuid                       \n\t"                      \
-        "xchg   %%"REG_b", %%"REG_S                             \
+        "xchg   %%"FF_REG_b", %%"FF_REG_S                       \
         : "=a" (eax), "=S" (ebx), "=c" (ecx), "=d" (edx)        \
         : "0" (index), "2"(0))
 
diff --git a/media/ffvpx/libavutil/x86/emms.h b/media/ffvpx/libavutil/x86/emms.h
index 6fda6e276..42c18e295 100644
--- a/media/ffvpx/libavutil/x86/emms.h
+++ b/media/ffvpx/libavutil/x86/emms.h
@@ -31,6 +31,8 @@ void avpriv_emms_yasm(void);
  * Empty mmx state.
  * this must be called between any dsp function and float/double code.
  * for example sin(); dsp->idct_put(); emms_c(); cos()
+ * Note, *alloc() and *free() also use float code in some libc implementations
+ * thus this also applies to them or any function using them.
  */
 static av_always_inline void emms_c(void)
 {
diff --git a/media/ffvpx/libavutil/x86/x86util.asm b/media/ffvpx/libavutil/x86/x86util.asm
index e7493f488..44ed750ae 100644
--- a/media/ffvpx/libavutil/x86/x86util.asm
+++ b/media/ffvpx/libavutil/x86/x86util.asm
@@ -30,7 +30,10 @@
 %include "libavutil/x86/x86inc.asm"
 
 %macro SBUTTERFLY 4
-%if avx_enabled == 0
+%ifidn %1, dqqq
+    vperm2i128  m%4, m%2, m%3, q0301
+    vinserti128 m%2, m%2, xm%3, 1
+%elif avx_enabled == 0
     mova      m%4, m%2
     punpckl%1 m%2, m%3
     punpckh%1 m%4, m%3
@@ -193,6 +196,70 @@
 %endif
 %endmacro
 
+%macro TRANSPOSE16x16W 18-19
+; in:  m0..m15, unless %19 in which case m6 is in %17
+; out: m0..m15, unless %19 in which case m4 is in %18
+; spills into %17 and %18
+%if %0 < 19
+    mova       %17, m%7
+%endif
+
+    SBUTTERFLY dqqq, %1,  %9, %7
+    SBUTTERFLY dqqq, %2, %10, %7
+    SBUTTERFLY dqqq, %3, %11, %7
+    SBUTTERFLY dqqq, %4, %12, %7
+    SBUTTERFLY dqqq, %5, %13, %7
+    SBUTTERFLY dqqq, %6, %14, %7
+    mova       %18, m%14
+    mova       m%7, %17
+    SBUTTERFLY dqqq, %7, %15, %14
+    SBUTTERFLY dqqq, %8, %16, %14
+
+    SBUTTERFLY  wd,  %1,  %2, %14
+    SBUTTERFLY  wd,  %3,  %4, %14
+    SBUTTERFLY  wd,  %5,  %6, %14
+    SBUTTERFLY  wd,  %7,  %8, %14
+    SBUTTERFLY  wd,  %9, %10, %14
+    SBUTTERFLY  wd, %11, %12, %14
+    mova       %17, m%12
+    mova      m%14, %18
+    SBUTTERFLY  wd, %13, %14, %12
+    SBUTTERFLY  wd, %15, %16, %12
+
+    SBUTTERFLY  dq,  %1,  %3, %12
+    SBUTTERFLY  dq,  %2,  %4, %12
+    SBUTTERFLY  dq,  %5,  %7, %12
+    SBUTTERFLY  dq,  %6,  %8, %12
+    SBUTTERFLY  dq,  %9, %11, %12
+    mova       %18, m%11
+    mova      m%12, %17
+    SBUTTERFLY  dq, %10, %12, %11
+    SBUTTERFLY  dq, %13, %15, %11
+    SBUTTERFLY  dq, %14, %16, %11
+
+    SBUTTERFLY qdq,  %1,  %5, %11
+    SBUTTERFLY qdq,  %2,  %6, %11
+    SBUTTERFLY qdq,  %3,  %7, %11
+    SBUTTERFLY qdq,  %4,  %8, %11
+
+    SWAP        %2, %5
+    SWAP        %4, %7
+
+    SBUTTERFLY qdq,  %9, %13, %11
+    SBUTTERFLY qdq, %10, %14, %11
+    mova      m%11, %18
+    mova       %18, m%5
+    SBUTTERFLY qdq, %11, %15, %5
+    SBUTTERFLY qdq, %12, %16, %5
+
+%if %0 < 19
+    mova       m%5, %18
+%endif
+
+    SWAP       %10, %13
+    SWAP       %12, %15
+%endmacro
+
 ; PABSW macro assumes %1 != %2, while ABS1/2 macros work in-place
 %macro PABSW 2
 %if cpuflag(ssse3)