From 1775866fd38ca85faea879d4c71080b5be329bd5 Mon Sep 17 00:00:00 2001
From: Mohamed Tarek <mt@rockbox.org>
Date: Thu, 14 May 2009 21:30:44 +0000
Subject: Move bswap.h up from libavutil/ and remove libavutil/

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20931 a1c6a512-1295-4272-9138-f99709370657
---
 apps/codecs/libcook/bswap.h | 99 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 apps/codecs/libcook/bswap.h

(limited to 'apps/codecs/libcook/bswap.h')

diff --git a/apps/codecs/libcook/bswap.h b/apps/codecs/libcook/bswap.h
new file mode 100644
index 0000000000..443cd1c3f9
--- /dev/null
+++ b/apps/codecs/libcook/bswap.h
@@ -0,0 +1,99 @@
+/*
+ * 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.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file libavutil/bswap.h
+ * byte swapping routines
+ */
+
+#ifndef AVUTIL_BSWAP_H
+#define AVUTIL_BSWAP_H
+
+#include <stdint.h>
+//#include "ffmpeg_config.h"
+//#include "common.h"
+
+#if   ARCH_ARM
+#   include "arm/bswap.h"
+#elif ARCH_BFIN
+#   include "bfin/bswap.h"
+#elif ARCH_SH4
+#   include "sh4/bswap.h"
+#elif ARCH_X86
+#   include "x86/bswap.h"
+#endif
+
+#ifndef bswap_16
+static inline uint16_t bswap_16(uint16_t x)
+{
+    x= (x>>8) | (x<<8);
+    return x;
+}
+#endif
+
+#ifndef bswap_32
+static inline uint32_t bswap_32(uint32_t x)
+{
+    x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
+    x= (x>>16) | (x<<16);
+    return x;
+}
+#endif
+
+#ifndef bswap_64
+static inline uint64_t bswap_64(uint64_t x)
+{
+#if 0
+    x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL);
+    x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL);
+    return (x>>32) | (x<<32);
+#else
+    union {
+        uint64_t ll;
+        uint32_t l[2];
+    } w, r;
+    w.ll = x;
+    r.l[0] = bswap_32 (w.l[1]);
+    r.l[1] = bswap_32 (w.l[0]);
+    return r.ll;
+#endif
+}
+#endif
+
+// be2me ... big-endian to machine-endian
+// le2me ... little-endian to machine-endian
+
+#ifdef WORDS_BIGENDIAN
+#define be2me_16(x) (x)
+#define be2me_32(x) (x)
+#define be2me_64(x) (x)
+#define le2me_16(x) bswap_16(x)
+#define le2me_32(x) bswap_32(x)
+#define le2me_64(x) bswap_64(x)
+#else
+#define be2me_16(x) bswap_16(x)
+#define be2me_32(x) bswap_32(x)
+#define be2me_64(x) bswap_64(x)
+#define le2me_16(x) (x)
+#define le2me_32(x) (x)
+#define le2me_64(x) (x)
+#endif
+
+#endif /* AVUTIL_BSWAP_H */
-- 
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