Bitstream: use AV_RB16() in LIBMPEG2_BITSTREAM_READER

This makes LIBMPEG2_BITSTREAM_READER_HACK redundant, so remove it.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@14197 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/bitstream.h

@@ -49,7 +49,6 @@
 //#define A32_BITSTREAM_READER
 #   endif
 #endif
-#define LIBMPEG2_BITSTREAM_READER_HACK //add BERO
 
 extern const uint8_t ff_reverse[256];
 
@@ -484,26 +483,13 @@ static inline void skip_bits_long(GetBitContext *s, int n){
         (gb)->cache= name##_cache;\
         (gb)->buffer_ptr= name##_buffer_ptr;\
 
-#ifdef LIBMPEG2_BITSTREAM_READER_HACK
-
-#   define UPDATE_CACHE(name, gb)\
-    if(name##_bit_count >= 0){\
-        name##_cache+= (int)be2me_16(*(uint16_t*)name##_buffer_ptr) << name##_bit_count;\
-        name##_buffer_ptr += 2;\
-        name##_bit_count-= 16;\
-    }\
-
-#else
-
 #   define UPDATE_CACHE(name, gb)\
     if(name##_bit_count >= 0){\
-        name##_cache+= ((name##_buffer_ptr[0]<<8) + name##_buffer_ptr[1]) << name##_bit_count;\
+        name##_cache+= AV_RB16(name##_buffer_ptr) << name##_bit_count; \
         name##_buffer_ptr+=2;\
         name##_bit_count-= 16;\
     }\
 
-#endif
-
 #   define SKIP_CACHE(name, gb, num)\
         name##_cache <<= (num);\