ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavutil/common.h

 /*
  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
@@ skipping 16 matching lines @@
 #define AVUTIL_COMMON_H
 
 #include <ctype.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <limits.h>
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-
-#ifdef HAVE_AV_CONFIG_H
-#include "config.h"
-#endif
-
-#ifdef __GNUC__
-#    define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y)
-#else
-#    define AV_GCC_VERSION_AT_LEAST(x,y) 0
-#endif
-
-#ifndef av_always_inline
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_always_inline __attribute__((always_inline)) inline
-#else
-#    define av_always_inline inline
-#endif
-#endif
-
-#ifndef av_noinline
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_noinline __attribute__((noinline))
-#else
-#    define av_noinline
-#endif
-#endif
-
-#ifndef av_pure
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_pure __attribute__((pure))
-#else
-#    define av_pure
-#endif
-#endif
-
-#ifndef av_const
-#if AV_GCC_VERSION_AT_LEAST(2,6)
-#    define av_const __attribute__((const))
-#else
-#    define av_const
-#endif
-#endif
-
-#ifndef av_cold
-#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3)
-#    define av_cold __attribute__((cold))
-#else
-#    define av_cold
-#endif
-#endif
-
-#ifndef av_flatten
-#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,1)
-#    define av_flatten __attribute__((flatten))
-#else
-#    define av_flatten
-#endif
-#endif
-
-#ifndef attribute_deprecated
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define attribute_deprecated __attribute__((deprecated))
-#else
-#    define attribute_deprecated
-#endif
-#endif
-
-#ifndef av_unused
-#if defined(__GNUC__)
-#    define av_unused __attribute__((unused))
-#else
-#    define av_unused
-#endif
-#endif
-
-#ifndef av_uninit
-#if defined(__GNUC__) && !defined(__ICC)
-#    define av_uninit(x) x=x
-#else
-#    define av_uninit(x) x
-#endif
-#endif
-
-#ifdef HAVE_AV_CONFIG_H
-#   include "intmath.h"
-#endif
+#include "attributes.h"
 
 //rounded division & shift
 #define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
 /* assume b>0 */
 #define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
 #define FFABS(a) ((a) >= 0 ? (a) : (-(a)))
 #define FFSIGN(a) ((a) > 0 ? 1 : -1)
 
 #define FFMAX(a,b) ((a) > (b) ? (a) : (b))
 #define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)
 #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
 #define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
 
 #define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
 #define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
 #define FFALIGN(x, a) (((x)+(a)-1)&~((a)-1))
 
 /* misc math functions */
 extern const uint8_t ff_log2_tab[256];
 
 extern const uint8_t av_reverse[256];
 
-#ifndef av_log2
-static inline av_const int av_log2(unsigned int v)
+static inline av_const int av_log2_c(unsigned int v)
 {
     int n = 0;
     if (v & 0xffff0000) {
         v >>= 16;
         n += 16;
     }
     if (v & 0xff00) {
         v >>= 8;
         n += 8;
     }
     n += ff_log2_tab[v];
 
     return n;
 }
-#endif
 
-#ifndef av_log2_16bit
-static inline av_const int av_log2_16bit(unsigned int v)
+static inline av_const int av_log2_16bit_c(unsigned int v)
 {
     int n = 0;
     if (v & 0xff00) {
         v >>= 8;
         n += 8;
     }
     n += ff_log2_tab[v];
 
     return n;
 }
+
+#ifdef HAVE_AV_CONFIG_H
+#   include "config.h"
+#   include "intmath.h"
+#endif
+
+#ifndef av_log2
+#   define av_log2       av_log2_c
+#endif
+#ifndef av_log2_16bit
+#   define av_log2_16bit av_log2_16bit_c
 #endif
 
 /**
  * Clips a signed integer value into the amin-amax range.
  * @param a value to clip
  * @param amin minimum value of the clip range
  * @param amax maximum value of the clip range
  * @return clipped value
  */
 static inline av_const int av_clip(int a, int amin, int amax)
@@ skipping 143 matching lines @@
             tmp = (256 - (256 >> bytes)) | (in >> shift);\
             PUT_BYTE\
             while (shift >= 6) {\
                 shift -= 6;\
                 tmp = 0x80 | ((in >> shift) & 0x3f);\
                 PUT_BYTE\
             }\
         }\
     }
 
+/*!
+ * \def PUT_UTF16(val, tmp, PUT_16BIT)
+ * Converts a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes).
+ * \param val is an input-only argument and should be of type uint32_t. It holds
+ * a UCS-4 encoded Unicode character that is to be converted to UTF-16. If
+ * val is given as a function it is executed only once.
+ * \param tmp is a temporary variable and should be of type uint16_t. It
+ * represents an intermediate value during conversion that is to be
+ * output by PUT_16BIT.
+ * \param PUT_16BIT writes the converted UTF-16 data to any proper destination
+ * in desired endianness. It could be a function or a statement, and uses tmp
+ * as the input byte.  For example, PUT_BYTE could be "*output++ = tmp;"
+ * PUT_BYTE will be executed 1 or 2 times depending on input character.
+ */
+#define PUT_UTF16(val, tmp, PUT_16BIT)\
+    {\
+        uint32_t in = val;\
+        if (in < 0x10000) {\
+            tmp = in;\
+            PUT_16BIT\
+        } else {\
+            tmp = 0xD800 | ((in - 0x10000) >> 10);\
+            PUT_16BIT\
+            tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\
+            PUT_16BIT\
+        }\
+    }\
+
+
+
 #include "mem.h"
 
 #ifdef HAVE_AV_CONFIG_H
 #    include "internal.h"
 #endif /* HAVE_AV_CONFIG_H */
 
 #endif /* AVUTIL_COMMON_H */