| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Module Overview: Starboard Byte Swap module |
| // |
| // Specifies functions for swapping byte order. These functions are used to |
| // deal with endianness when performing I/O. |
| |
| #ifndef STARBOARD_BYTE_SWAP_H_ |
| #define STARBOARD_BYTE_SWAP_H_ |
| |
| #include "starboard/configuration.h" |
| #include "starboard/export.h" |
| #include "starboard/types.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if SB_IS(BIG_ENDIAN) |
| #define SB_HOST_TO_NET_S16(x) (x) |
| #define SB_HOST_TO_NET_U16(x) (x) |
| #define SB_HOST_TO_NET_S32(x) (x) |
| #define SB_HOST_TO_NET_U32(x) (x) |
| #define SB_HOST_TO_NET_S64(x) (x) |
| #define SB_HOST_TO_NET_U64(x) (x) |
| #else |
| #define SB_HOST_TO_NET_S16(x) SbByteSwapS16(x) |
| #define SB_HOST_TO_NET_U16(x) SbByteSwapU16(x) |
| #define SB_HOST_TO_NET_S32(x) SbByteSwapS32(x) |
| #define SB_HOST_TO_NET_U32(x) SbByteSwapU32(x) |
| #define SB_HOST_TO_NET_S64(x) SbByteSwapS64(x) |
| #define SB_HOST_TO_NET_U64(x) SbByteSwapU64(x) |
| #endif |
| |
| #define SB_NET_TO_HOST_S16(x) SB_HOST_TO_NET_S16(x) |
| #define SB_NET_TO_HOST_U16(x) SB_HOST_TO_NET_U16(x) |
| #define SB_NET_TO_HOST_S32(x) SB_HOST_TO_NET_S32(x) |
| #define SB_NET_TO_HOST_U32(x) SB_HOST_TO_NET_U32(x) |
| #define SB_NET_TO_HOST_S64(x) SB_HOST_TO_NET_S64(x) |
| #define SB_NET_TO_HOST_U64(x) SB_HOST_TO_NET_U64(x) |
| |
| // TODO: Determine if these need to be inlined for performance reasons, |
| // and then act on that determination somehow. |
| |
| // Unconditionally swaps the byte order in signed 16-bit |value|. |
| // |value|: The value for which the byte order will be swapped. |
| SB_EXPORT int16_t SbByteSwapS16(int16_t value); |
| |
| // Unconditionally swaps the byte order in unsigned 16-bit |value|. |
| // |value|: The value for which the byte order will be swapped. |
| SB_EXPORT uint16_t SbByteSwapU16(uint16_t value); |
| |
| // Unconditionally swaps the byte order in signed 32-bit |value|. |
| // |value|: The value for which the byte order will be swapped. |
| SB_EXPORT int32_t SbByteSwapS32(int32_t value); |
| |
| // Unconditionally swaps the byte order in unsigned 32-bit |value|. |
| // |value|: The value for which the byte order will be swapped. |
| SB_EXPORT uint32_t SbByteSwapU32(uint32_t value); |
| |
| // Unconditionally swaps the byte order in signed 64-bit |value|. |
| // |value|: The value for which the byte order will be swapped. |
| SB_EXPORT int64_t SbByteSwapS64(int64_t value); |
| |
| // Unconditionally swaps the byte order in unsigned 64-bit |value|. |
| // |value|: The value for which the byte order will be swapped. |
| SB_EXPORT uint64_t SbByteSwapU64(uint64_t value); |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // STARBOARD_BYTE_SWAP_H_ |