/* * Copyright (c) 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. */ #ifndef AOM_DSP_AOM_DSP_COMMON_H_ #define AOM_DSP_AOM_DSP_COMMON_H_ #include "./aom_config.h" #include "aom/aom_integer.h" #include "aom_ports/mem.h" #ifdef __cplusplus extern "C" { #endif #ifndef MAX_SB_SIZE #if CONFIG_AV1 && CONFIG_EXT_PARTITION #define MAX_SB_SIZE 128 #else #define MAX_SB_SIZE 64 #endif // CONFIG_AV1 && CONFIG_EXT_PARTITION #endif // ndef MAX_SB_SIZE #define AOMMIN(x, y) (((x) < (y)) ? (x) : (y)) #define AOMMAX(x, y) (((x) > (y)) ? (x) : (y)) #define NELEMENTS(x) (sizeof((x)) / sizeof((x)[0])) #define IMPLIES(a, b) (!(a) || (b)) // Logical 'a implies b' (or 'a -> b') #define IS_POWER_OF_TWO(x) (((x) & ((x)-1)) == 0) /* Left shifting a negative value became undefined behavior in C99 (downgraded from merely implementation-defined in C89). This should still compile to the correct thing on any two's-complement machine, but avoid ubsan warnings.*/ #define AOM_SIGNED_SHL(x, shift) ((x) * (((x)*0 + 1) << (shift))) // These can be used to give a hint about branch outcomes. // This can have an effect, even if your target processor has a // good branch predictor, as these hints can affect basic block // ordering by the compiler. #ifdef __GNUC__ #define LIKELY(v) __builtin_expect(v, 1) #define UNLIKELY(v) __builtin_expect(v, 0) #else #define LIKELY(v) (v) #define UNLIKELY(v) (v) #endif #define AOM_SWAP(type, a, b) \ do { \ type c = (b); \ b = a; \ a = c; \ } while (0) #if CONFIG_AOM_QM typedef uint16_t qm_val_t; #define AOM_QM_BITS 6 #endif #if CONFIG_HIGHBITDEPTH // Note: // tran_low_t is the datatype used for final transform coefficients. // tran_high_t is the datatype used for intermediate transform stages. typedef int64_t tran_high_t; typedef int32_t tran_low_t; #else // Note: // tran_low_t is the datatype used for final transform coefficients. // tran_high_t is the datatype used for intermediate transform stages. typedef int32_t tran_high_t; typedef int16_t tran_low_t; #endif // CONFIG_HIGHBITDEPTH static INLINE uint8_t clip_pixel(int val) { return (val > 255) ? 255 : (val < 0) ? 0 : val; } static INLINE int clamp(int value, int low, int high) { return value < low ? low : (value > high ? high : value); } static INLINE double fclamp(double value, double low, double high) { return value < low ? low : (value > high ? high : value); } #if CONFIG_HIGHBITDEPTH static INLINE uint16_t clip_pixel_highbd(int val, int bd) { switch (bd) { case 8: default: return (uint16_t)clamp(val, 0, 255); case 10: return (uint16_t)clamp(val, 0, 1023); case 12: return (uint16_t)clamp(val, 0, 4095); } } #endif // CONFIG_HIGHBITDEPTH #ifdef __cplusplus } // extern "C" #endif #endif // AOM_DSP_AOM_DSP_COMMON_H_