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Diffstat (limited to 'third_party/aom/av1/encoder/random.h')
| -rw-r--r-- | third_party/aom/av1/encoder/random.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/random.h b/third_party/aom/av1/encoder/random.h new file mode 100644 index 0000000000..9b2dac9659 --- /dev/null +++ b/third_party/aom/av1/encoder/random.h @@ -0,0 +1,29 @@ +/* + * 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_ |