From c04dcc2e7d834218ef2d4194331e383402495ae1 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 10 Apr 2024 20:07:22 +0200
Subject: Adding upstream version 2:20.4+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 libdvdread-embedded/src/bswap.h | 118 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 libdvdread-embedded/src/bswap.h

(limited to 'libdvdread-embedded/src/bswap.h')

diff --git a/libdvdread-embedded/src/bswap.h b/libdvdread-embedded/src/bswap.h
new file mode 100644
index 0000000..d3b2383
--- /dev/null
+++ b/libdvdread-embedded/src/bswap.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2000, 2001 Billy Biggs <vektor@dumbterm.net>,
+ *                          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * This file is part of libdvdread.
+ *
+ * libdvdread is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * libdvdread 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with libdvdread; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LIBDVDREAD_BSWAP_H
+#define LIBDVDREAD_BSWAP_H
+
+#include <config.h>
+
+#if defined(WORDS_BIGENDIAN)
+/* All bigendian systems are fine, just ignore the swaps. */
+#define B2N_16(x) (void)(x)
+#define B2N_32(x) (void)(x)
+#define B2N_64(x) (void)(x)
+
+#else
+
+/* For __FreeBSD_version */
+#if defined(HAVE_SYS_PARAM_H)
+#include <sys/param.h>
+#endif
+
+#if defined(__linux__) || defined(__GLIBC__)
+#include <byteswap.h>
+#define B2N_16(x) x = bswap_16(x)
+#define B2N_32(x) x = bswap_32(x)
+#define B2N_64(x) x = bswap_64(x)
+
+#elif defined(__APPLE__)
+#include <libkern/OSByteOrder.h>
+#define B2N_16(x) x = OSSwapBigToHostInt16(x)
+#define B2N_32(x) x = OSSwapBigToHostInt32(x)
+#define B2N_64(x) x = OSSwapBigToHostInt64(x)
+
+#elif defined(__NetBSD__)
+#include <sys/endian.h>
+#define B2N_16(x) BE16TOH(x)
+#define B2N_32(x) BE32TOH(x)
+#define B2N_64(x) BE64TOH(x)
+
+#elif defined(__OpenBSD__)
+#include <sys/endian.h>
+#define B2N_16(x) x = swap16(x)
+#define B2N_32(x) x = swap32(x)
+#define B2N_64(x) x = swap64(x)
+
+#elif defined(__FreeBSD__) && __FreeBSD_version >= 470000
+#include <sys/endian.h>
+#define B2N_16(x) x = be16toh(x)
+#define B2N_32(x) x = be32toh(x)
+#define B2N_64(x) x = be64toh(x)
+
+#elif defined(__QNXNTO__)
+#include <gulliver.h>
+#define B2N_16(x) x = ENDIAN_RET16(x)
+#define B2N_32(x) x = ENDIAN_RET32(x)
+#define B2N_64(x) x = ENDIAN_RET64(x)
+
+#elif defined(__DragonFly__)
+#include <sys/endian.h>
+#define B2N_16(x) x = bswap16(x)
+#define B2N_32(x) x = bswap32(x)
+#define B2N_64(x) x = bswap64(x)
+
+/* This is a slow but portable implementation, it has multiple evaluation
+ * problems so beware.
+ * Old FreeBSD's and Solaris don't have <byteswap.h> or any other such
+ * functionality!
+ */
+
+#elif defined(__FreeBSD__) || defined(__sun) || defined(__bsdi__) || defined(_WIN32) || defined(__CYGWIN__) || defined(__BEOS__) || defined(__OS2__)
+#define B2N_16(x)                             \
+ x = ((((x) & 0xff00) >> 8) |                 \
+      (((x) & 0x00ff) << 8))
+#define B2N_32(x)                             \
+ x = ((((x) & 0xff000000) >> 24) |            \
+      (((x) & 0x00ff0000) >>  8) |            \
+      (((x) & 0x0000ff00) <<  8) |            \
+      (((x) & 0x000000ff) << 24))
+#define B2N_64(x)                             \
+ x = ((((x) & 0xff00000000000000ULL) >> 56) | \
+      (((x) & 0x00ff000000000000ULL) >> 40) | \
+      (((x) & 0x0000ff0000000000ULL) >> 24) | \
+      (((x) & 0x000000ff00000000ULL) >>  8) | \
+      (((x) & 0x00000000ff000000ULL) <<  8) | \
+      (((x) & 0x0000000000ff0000ULL) << 24) | \
+      (((x) & 0x000000000000ff00ULL) << 40) | \
+      (((x) & 0x00000000000000ffULL) << 56))
+
+#else
+
+/* If there isn't a header provided with your system with this functionality
+ * add the relevant || define( ) to the portable implementation above.
+ */
+#error "You need to add endian swap macros for your system"
+
+#endif
+
+#endif /* WORDS_BIGENDIAN */
+
+#endif /* LIBDVDREAD_BSWAP_H */
-- 
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