Codechange: Use std::endian instead of TTD_ENDIAN defines.

src/core/CMakeLists.txt

@@ -5,7 +5,6 @@ add_files(
     backup_type.hpp
     bitmath_func.hpp
     endian_func.hpp
-    endian_type.hpp
     enum_type.hpp
     format.hpp
     geometry_func.cpp

src/core/endian_func.hpp

@@ -10,32 +10,54 @@
 #ifndef ENDIAN_FUNC_HPP
 #define ENDIAN_FUNC_HPP
 
-#include "endian_type.hpp"
 #include "bitmath_func.hpp"
 
-/* Setup alignment and conversion macros */
-#if TTD_ENDIAN == TTD_BIG_ENDIAN
-#	define FROM_BE16(x) (x)
-#	define FROM_BE32(x) (x)
-#	define TO_BE16(x)   (x)
-#	define TO_BE32(x)   (x)
-#	define TO_BE32X(x)  (x)
-#	define FROM_LE16(x) std::byteswap(x)
-#	define FROM_LE32(x) std::byteswap(x)
-#	define TO_LE16(x)   std::byteswap(x)
-#	define TO_LE32(x)   std::byteswap(x)
-#	define TO_LE32X(x)  std::byteswap(x)
-#else
-#	define FROM_BE16(x) std::byteswap(x)
-#	define FROM_BE32(x) std::byteswap(x)
-#	define TO_BE16(x)   std::byteswap(x)
-#	define TO_BE32(x)   std::byteswap(x)
-#	define TO_BE32X(x)  std::byteswap(x)
-#	define FROM_LE16(x) (x)
-#	define FROM_LE32(x) (x)
-#	define TO_LE16(x)   (x)
-#	define TO_LE32(x)   (x)
-#	define TO_LE32X(x)  (x)
-#endif /* TTD_ENDIAN == TTD_BIG_ENDIAN */
+static constexpr uint16_t FROM_BE16(uint16_t x)
+{
+	if constexpr (std::endian::native == std::endian::big) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint32_t FROM_BE32(uint32_t x)
+{
+	if constexpr (std::endian::native == std::endian::big) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint16_t TO_BE16(uint16_t x)
+{
+	if constexpr (std::endian::native == std::endian::big) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint32_t TO_BE32(uint32_t x)
+{
+	if constexpr (std::endian::native == std::endian::big) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint16_t FROM_LE16(uint16_t x)
+{
+	if constexpr (std::endian::native == std::endian::little) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint32_t FROM_LE32(uint32_t x)
+{
+	if constexpr (std::endian::native == std::endian::little) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint16_t TO_LE16(uint16_t x)
+{
+	if constexpr (std::endian::native == std::endian::little) return x;
+	return std::byteswap(x);
+}
+
+static constexpr uint32_t TO_LE32(uint32_t x)
+{
+	if constexpr (std::endian::native == std::endian::little) return x;
+	return std::byteswap(x);
+}
 
 #endif /* ENDIAN_FUNC_HPP */

src/core/endian_type.hpp

@@ -1,22 +0,0 @@
-/*
- * This file is part of OpenTTD.
- * OpenTTD 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, version 2.
- * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** @file endian_type.hpp Definition of various endian-dependant macros. */
-
-#ifndef ENDIAN_TYPE_HPP
-#define ENDIAN_TYPE_HPP
-
-/** Little endian builds use this for TTD_ENDIAN. */
-#define TTD_LITTLE_ENDIAN 0
-/** Big endian builds use this for TTD_ENDIAN. */
-#define TTD_BIG_ENDIAN 1
-
-#if !defined(TTD_ENDIAN)
-#	error "TTD_ENDIAN is not defined; please set it to either TTD_LITTLE_ENDIAN or TTD_BIG_ENDIAN"
-#endif /* !TTD_ENDIAN */
-
-#endif /* ENDIAN_TYPE_HPP */

src/saveload/saveload.cpp

@@ -2697,10 +2697,10 @@ struct SaveLoadFormat {
 	uint8_t max_compression;                 ///< the maximum compression level of this format
 };
 
-static const uint32_t SAVEGAME_TAG_LZO = TO_BE32X('OTTD');
-static const uint32_t SAVEGAME_TAG_NONE = TO_BE32X('OTTN');
-static const uint32_t SAVEGAME_TAG_ZLIB = TO_BE32X('OTTZ');
-static const uint32_t SAVEGAME_TAG_LZMA = TO_BE32X('OTTX');
+static const uint32_t SAVEGAME_TAG_LZO = TO_BE32('OTTD');
+static const uint32_t SAVEGAME_TAG_NONE = TO_BE32('OTTN');
+static const uint32_t SAVEGAME_TAG_ZLIB = TO_BE32('OTTZ');
+static const uint32_t SAVEGAME_TAG_LZMA = TO_BE32('OTTX');
 
 /** The different saveload formats known/understood by OpenTTD. */
 static const SaveLoadFormat _saveload_formats[] = {

src/smallmap_gui.cpp

@@ -256,7 +256,7 @@ static const LegendAndColour * const _legend_table[] = {
 	_legend_land_owners,
 };
 
-#define MKCOLOUR(x)         TO_LE32X(x)
+#define MKCOLOUR(x)         TO_LE32(x)
 
 #define MKCOLOUR_XXXX(x)    (MKCOLOUR(0x01010101) * (uint)(x))
 #define MKCOLOUR_0XX0(x)    (MKCOLOUR(0x00010100) * (uint)(x))

src/table/palettes.h

@@ -7,8 +7,6 @@
 
 /** @file palettes.h The colour translation of the GRF palettes. */
 
-#include "../core/endian_type.hpp"
-
 #define M(r, g, b) Colour(r, g, b)
 
 /** Colour palette (DOS) */