| /* |
| * Copyright (c) 2017, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #ifndef AV1_ENCODER_RANDOM_H_ |
| #define AV1_ENCODER_RANDOM_H_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| // Generate a random number in the range [0, 32768). |
| static INLINE unsigned int lcg_rand16(unsigned int *state) { |
| *state = (unsigned int)(*state * 1103515245ULL + 12345); |
| return *state / 65536 % 32768; |
| } |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AV1_ENCODER_RANDOM_H_ |
