| /* |

| * Copyright (c) 2001-2016, 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. |

| */ |

| |

| #if !defined(_entcode_H) |

| #define _entcode_H (1) |

| #include <limits.h> |

| #include <stddef.h> |

| #include "av1/common/odintrin.h" |

| |

| /*OPT: od_ec_window must be at least 32 bits, but if you have fast arithmetic |

| on a larger type, you can speed up the decoder by using it here.*/ |

| typedef uint32_t od_ec_window; |

| |

| #define OD_EC_WINDOW_SIZE ((int)sizeof(od_ec_window) * CHAR_BIT) |

| |

| /*The number of bits to use for the range-coded part of unsigned integers.*/ |

| #define OD_EC_UINT_BITS (4) |

| |

| /*The resolution of fractional-precision bit usage measurements, i.e., |

| 3 => 1/8th bits.*/ |

| #define OD_BITRES (3) |

| |

| /*The value stored in an iCDF is 32768 minus the actual Q15 cumulative |

| probability (an "inverse" CDF). |

| This function converts from one representation to the other (and is its own |

| inverse).*/ |

| #define OD_ICDF(x) (32768U - (x)) |

| |

| /*See entcode.c for further documentation.*/ |

| |

| OD_WARN_UNUSED_RESULT uint32_t od_ec_tell_frac(uint32_t nbits_total, |

| uint32_t rng); |

| |

| #endif |