sync with upstream

1 files changed, 90 insertions, 0 deletions

diff --git a/xbmc/utils/EndianSwap.h b/xbmc/utils/EndianSwap.h
new file mode 100644
index 0000000..0b02689
--- /dev/null
+++ b/xbmc/utils/EndianSwap.h
@@ -0,0 +1,90 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+ /* Endian_SwapXX functions taken from SDL (SDL_endian.h) */
+
+#ifdef TARGET_POSIX
+#include <inttypes.h>
+#elif TARGET_WINDOWS
+#define __inline__ __inline
+#include <stdint.h>
+#endif
+
+
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
+static __inline__ uint16_t Endian_Swap16(uint16_t x)
+{
+        uint16_t result;
+
+        __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x));
+        return result;
+}
+
+static __inline__ uint32_t Endian_Swap32(uint32_t x)
+{
+        uint32_t result;
+
+        __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x));
+        __asm__("rlwimi %0,%2,8,8,15"   : "=&r" (result) : "0" (result),    "r" (x));
+        __asm__("rlwimi %0,%2,24,0,7"   : "=&r" (result) : "0" (result),    "r" (x));
+        return result;
+}
+#else
+static __inline__ uint16_t Endian_Swap16(uint16_t x) {
+        return((x<<8)|(x>>8));
+}
+
+static __inline__ uint32_t Endian_Swap32(uint32_t x) {
+        return((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24));
+}
+#endif
+
+static __inline__ uint64_t Endian_Swap64(uint64_t x) {
+        uint32_t hi, lo;
+
+        /* Separate into high and low 32-bit values and swap them */
+        lo = (uint32_t)(x&0xFFFFFFFF);
+        x >>= 32;
+        hi = (uint32_t)(x&0xFFFFFFFF);
+        x = Endian_Swap32(lo);
+        x <<= 32;
+        x |= Endian_Swap32(hi);
+        return(x);
+
+}
+
+void Endian_Swap16_buf(uint16_t *dst, uint16_t *src, int w);
+
+#ifndef WORDS_BIGENDIAN
+#define Endian_SwapLE16(X) (X)
+#define Endian_SwapLE32(X) (X)
+#define Endian_SwapLE64(X) (X)
+#define Endian_SwapBE16(X) Endian_Swap16(X)
+#define Endian_SwapBE32(X) Endian_Swap32(X)
+#define Endian_SwapBE64(X) Endian_Swap64(X)
+#else
+#define Endian_SwapLE16(X) Endian_Swap16(X)
+#define Endian_SwapLE32(X) Endian_Swap32(X)
+#define Endian_SwapLE64(X) Endian_Swap64(X)
+#define Endian_SwapBE16(X) (X)
+#define Endian_SwapBE32(X) (X)
+#define Endian_SwapBE64(X) (X)
+#endif
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+