1*103e46e4SHarish Mahendrakar // Copyright (c) 2012 The WebM project authors. All Rights Reserved. 2*103e46e4SHarish Mahendrakar // 3*103e46e4SHarish Mahendrakar // Use of this source code is governed by a BSD-style license 4*103e46e4SHarish Mahendrakar // that can be found in the LICENSE file in the root of the source 5*103e46e4SHarish Mahendrakar // tree. An additional intellectual property rights grant can be found 6*103e46e4SHarish Mahendrakar // in the file PATENTS. All contributing project authors may 7*103e46e4SHarish Mahendrakar // be found in the AUTHORS file in the root of the source tree. 8*103e46e4SHarish Mahendrakar 9*103e46e4SHarish Mahendrakar #ifndef LIBWEBM_COMMON_WEBM_ENDIAN_H_ 10*103e46e4SHarish Mahendrakar #define LIBWEBM_COMMON_WEBM_ENDIAN_H_ 11*103e46e4SHarish Mahendrakar 12*103e46e4SHarish Mahendrakar #include <stdint.h> 13*103e46e4SHarish Mahendrakar 14*103e46e4SHarish Mahendrakar namespace libwebm { 15*103e46e4SHarish Mahendrakar 16*103e46e4SHarish Mahendrakar // Swaps unsigned 32 bit values to big endian if needed. Returns |value| if 17*103e46e4SHarish Mahendrakar // architecture is big endian. Returns big endian value if architecture is 18*103e46e4SHarish Mahendrakar // little endian. Returns 0 otherwise. 19*103e46e4SHarish Mahendrakar uint32_t host_to_bigendian(uint32_t value); 20*103e46e4SHarish Mahendrakar 21*103e46e4SHarish Mahendrakar // Swaps unsigned 32 bit values to little endian if needed. Returns |value| if 22*103e46e4SHarish Mahendrakar // architecture is big endian. Returns little endian value if architecture is 23*103e46e4SHarish Mahendrakar // little endian. Returns 0 otherwise. 24*103e46e4SHarish Mahendrakar uint32_t bigendian_to_host(uint32_t value); 25*103e46e4SHarish Mahendrakar 26*103e46e4SHarish Mahendrakar // Swaps unsigned 64 bit values to big endian if needed. Returns |value| if 27*103e46e4SHarish Mahendrakar // architecture is big endian. Returns big endian value if architecture is 28*103e46e4SHarish Mahendrakar // little endian. Returns 0 otherwise. 29*103e46e4SHarish Mahendrakar uint64_t host_to_bigendian(uint64_t value); 30*103e46e4SHarish Mahendrakar 31*103e46e4SHarish Mahendrakar // Swaps unsigned 64 bit values to little endian if needed. Returns |value| if 32*103e46e4SHarish Mahendrakar // architecture is big endian. Returns little endian value if architecture is 33*103e46e4SHarish Mahendrakar // little endian. Returns 0 otherwise. 34*103e46e4SHarish Mahendrakar uint64_t bigendian_to_host(uint64_t value); 35*103e46e4SHarish Mahendrakar 36*103e46e4SHarish Mahendrakar } // namespace libwebm 37*103e46e4SHarish Mahendrakar 38*103e46e4SHarish Mahendrakar #endif // LIBWEBM_COMMON_WEBM_ENDIAN_H_ 39