From 8b37a1bc306c1d5a3cc92e9dc04fb95d5d9a0298 Mon Sep 17 00:00:00 2001
From: trav90 <travawine@protonmail.ch>
Date: Thu, 26 Apr 2018 16:49:15 -0500
Subject: [ffvpx] Update ffvp9/ffvp8 to 3.4.2-release

Structure of code was slightly modified so that it should be no longer necessary to re-generate the config_*.h files, greatly simplifying the resync process in the future.
---
 media/ffvpx/libavcodec/golomb.h | 55 ++++++++++++++++++++++++-----------------
 1 file changed, 33 insertions(+), 22 deletions(-)

(limited to 'media/ffvpx/libavcodec/golomb.h')

diff --git a/media/ffvpx/libavcodec/golomb.h b/media/ffvpx/libavcodec/golomb.h
index 917ea54e1..efb1eff8a 100644
--- a/media/ffvpx/libavcodec/golomb.h
+++ b/media/ffvpx/libavcodec/golomb.h
@@ -314,6 +314,8 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
 
     log = av_log2(buf);
 
+    av_assert2(k <= 31);
+
     if (log - k >= 32 - MIN_CACHE_BITS + (MIN_CACHE_BITS == 32) &&
         32 - log < limit) {
         buf >>= log - k;
@@ -325,8 +327,10 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
     } else {
         int i;
         for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0; i++) {
-            if (gb->size_in_bits <= re_index)
+            if (gb->size_in_bits <= re_index) {
+                CLOSE_READER(re, gb);
                 return -1;
+            }
             LAST_SKIP_BITS(re, gb, 1);
             UPDATE_CACHE(re, gb);
         }
@@ -348,16 +352,17 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
                 buf = 0;
             }
 
-            CLOSE_READER(re, gb);
-            return buf + (i << k);
+            buf += ((SUINT)i << k);
         } else if (i == limit - 1) {
             buf = SHOW_UBITS(re, gb, esc_len);
             LAST_SKIP_BITS(re, gb, esc_len);
-            CLOSE_READER(re, gb);
 
-            return buf + 1;
-        } else
-            return -1;
+            buf ++;
+        } else {
+            buf = -1;
+        }
+        CLOSE_READER(re, gb);
+        return buf;
     }
 }
 
@@ -445,19 +450,20 @@ static inline int get_te(GetBitContext *s, int r, char *file, const char *func,
     return i;
 }
 
-#define get_ue_golomb(a) get_ue(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_se_golomb(a) get_se(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_te_golomb(a, r)  get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_te0_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_ue_golomb(a) get_ue(a, __FILE__, __func__, __LINE__)
+#define get_se_golomb(a) get_se(a, __FILE__, __func__, __LINE__)
+#define get_te_golomb(a, r)  get_te(a, r, __FILE__, __func__, __LINE__)
+#define get_te0_golomb(a, r) get_te(a, r, __FILE__, __func__, __LINE__)
 
 #endif /* TRACE */
 
 /**
- * write unsigned exp golomb code.
+ * write unsigned exp golomb code. 2^16 - 2 at most
  */
 static inline void set_ue_golomb(PutBitContext *pb, int i)
 {
     av_assert2(i >= 0);
+    av_assert2(i <= 0xFFFE);
 
     if (i < 256)
         put_bits(pb, ff_ue_golomb_len[i], i + 1);
@@ -467,6 +473,21 @@ static inline void set_ue_golomb(PutBitContext *pb, int i)
     }
 }
 
+/**
+ * write unsigned exp golomb code. 2^32-2 at most.
+ */
+static inline void set_ue_golomb_long(PutBitContext *pb, uint32_t i)
+{
+    av_assert2(i <= (UINT32_MAX - 1));
+
+    if (i < 256)
+        put_bits(pb, ff_ue_golomb_len[i], i + 1);
+    else {
+        int e = av_log2(i + 1);
+        put_bits64(pb, 2 * e + 1, i + 1);
+    }
+}
+
 /**
  * write truncated unsigned exp golomb code.
  */
@@ -486,19 +507,9 @@ static inline void set_te_golomb(PutBitContext *pb, int i, int range)
  */
 static inline void set_se_golomb(PutBitContext *pb, int i)
 {
-#if 0
-    if (i <= 0)
-        i = -2 * i;
-    else
-        i = 2 * i - 1;
-#elif 1
     i = 2 * i - 1;
     if (i < 0)
         i ^= -1;    //FIXME check if gcc does the right thing
-#else
-    i  = 2 * i - 1;
-    i ^= (i >> 31);
-#endif
     set_ue_golomb(pb, i);
 }
 
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