Open type table definitions.
http://codereview.appspot.com/5577064/
git-svn-id: http://skia.googlecode.com/svn/trunk@3131 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/core/SkEndian.h b/include/core/SkEndian.h
index 3eb67da..910cf1e 100644
--- a/include/core/SkEndian.h
+++ b/include/core/SkEndian.h
@@ -31,8 +31,11 @@
*/
static inline uint16_t SkEndianSwap16(U16CPU value) {
SkASSERT(value == (uint16_t)value);
- return (uint16_t)((value >> 8) | (value << 8));
+ return static_cast<uint16_t>((value >> 8) | (value << 8));
}
+template<uint16_t N> struct SkTEndianSwap16 {
+ static const uint16_t value = static_cast<uint16_t>((N >> 8) | ((N & 0xFF) << 8));
+};
/** Vector version of SkEndianSwap16(), which swaps the
low two bytes of each value in the array.
@@ -55,6 +58,12 @@
((value & 0xFF0000) >> 8) |
(value >> 24);
}
+template<uint32_t N> struct SkTEndianSwap32 {
+ static const uint32_t value = ((N & 0xFF) << 24) |
+ ((N & 0xFF00) << 8) |
+ ((N & 0xFF0000) >> 8) |
+ (N >> 24);
+};
/** Vector version of SkEndianSwap16(), which swaps the
bytes of each value in the array.
@@ -73,11 +82,21 @@
#define SkEndian_SwapBE32(n) SkEndianSwap32(n)
#define SkEndian_SwapLE16(n) (n)
#define SkEndian_SwapLE32(n) (n)
+
+ #define SkTEndian_SwapBE16(n) SkTEndianSwap16<n>::value
+ #define SkTEndian_SwapBE32(n) SkTEndianSwap32<n>::value
+ #define SkTEndian_SwapLE16(n) (n)
+ #define SkTEndian_SwapLE32(n) (n)
#else // SK_CPU_BENDIAN
#define SkEndian_SwapBE16(n) (n)
#define SkEndian_SwapBE32(n) (n)
#define SkEndian_SwapLE16(n) SkEndianSwap16(n)
#define SkEndian_SwapLE32(n) SkEndianSwap32(n)
+
+ #define SkTEndian_SwapBE16(n) (n)
+ #define SkTEndian_SwapBE32(n) (n)
+ #define SkTEndian_SwapLE16(n) SkTEndianSwap16<n>::value
+ #define SkTEndian_SwapLE32(n) SkTEndianSwap32<n>::value
#endif
// When a bytestream is embedded in a 32-bit word, how far we need to
@@ -94,5 +113,40 @@
#define SkEndian_Byte3Shift 0
#endif
+
+#if defined(SK_UINT8_BITFIELD_LENDIAN) && defined(SK_UINT8_BITFIELD_BENDIAN)
+ #error "can't have both bitfield LENDIAN and BENDIAN defined"
+#endif
+
+#if !defined(SK_UINT8_BITFIELD_LENDIAN) && !defined(SK_UINT8_BITFIELD_BENDIAN)
+ #ifdef SK_CPU_LENDIAN
+ #define SK_UINT8_BITFIELD_LENDIAN
+ #else
+ #define SK_UINT8_BITFIELD_BENDIAN
+ #endif
+#endif
+
+#ifdef SK_UINT8_BITFIELD_LENDIAN
+ #define SK_UINT8_BITFIELD(f0, f1, f2, f3, f4, f5, f6, f7) \
+ SK_OT_BYTE f0 : 1; \
+ SK_OT_BYTE f1 : 1; \
+ SK_OT_BYTE f2 : 1; \
+ SK_OT_BYTE f3 : 1; \
+ SK_OT_BYTE f4 : 1; \
+ SK_OT_BYTE f5 : 1; \
+ SK_OT_BYTE f6 : 1; \
+ SK_OT_BYTE f7 : 1;
+#else
+ #define SK_UINT8_BITFIELD(f0, f1, f2, f3, f4, f5, f6, f7) \
+ SK_OT_BYTE f7 : 1; \
+ SK_OT_BYTE f6 : 1; \
+ SK_OT_BYTE f5 : 1; \
+ SK_OT_BYTE f4 : 1; \
+ SK_OT_BYTE f3 : 1; \
+ SK_OT_BYTE f2 : 1; \
+ SK_OT_BYTE f1 : 1; \
+ SK_OT_BYTE f0 : 1;
+#endif
+
#endif