get_bits: Rename HAVE_BITS_REMAINING --> BITS_AVAILABLE

The HAVE_ prefix is reserved for macros set by configure.

libavcodec/get_bits.h

@@ -128,14 +128,14 @@ typedef struct RL_VLC_ELEM {
     unsigned int name ## _index = (gb)->index;  \
     unsigned int av_unused name ## _cache = 0
 
-#define HAVE_BITS_REMAINING(name, gb) 1
+#define BITS_AVAILABLE(name, gb) 1
 #else
 #define OPEN_READER(name, gb)                   \
     unsigned int name ## _index = (gb)->index;  \
     unsigned int av_unused name ## _cache = 0;  \
     unsigned int av_unused name ## _size_plus8 = (gb)->size_in_bits_plus8
 
-#define HAVE_BITS_REMAINING(name, gb) name ## _index < name ## _size_plus8
+#define BITS_AVAILABLE(name, gb) name ## _index < name ## _size_plus8
 #endif
 
 #define CLOSE_READER(name, gb) (gb)->index = name ## _index

libavcodec/golomb.h

@@ -138,7 +138,7 @@ static inline unsigned svq3_get_ue_golomb(GetBitContext *gb)
             ret = (ret << 4) | ff_interleaved_dirac_golomb_vlc_code[buf];
             UPDATE_CACHE(re, gb);
             buf = GET_CACHE(re, gb);
-        } while (HAVE_BITS_REMAINING(re, gb));
+        } while (BITS_AVAILABLE(re, gb));
 
         CLOSE_READER(re, gb);
         return ret - 1;
@@ -328,7 +328,7 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
         return buf;
     } else {
         int i;
-        for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0 && HAVE_BITS_REMAINING(re, gb); i++) {
+        for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0 && BITS_AVAILABLE(re, gb); i++) {
             LAST_SKIP_BITS(re, gb, 1);
             UPDATE_CACHE(re, gb);
         }