ref: d31698b0e08ccb78543e1046090a5bc79f016f78
dir: /vp9/common/vp9_common.h/
/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #ifndef VP9_COMMON_VP9_COMMON_H_ #define VP9_COMMON_VP9_COMMON_H_ /* Interface header for common constant data structures and lookup tables */ #include <assert.h> #include "./vpx_config.h" #include "vpx_mem/vpx_mem.h" #include "vpx/vpx_integer.h" #include "vp9/common/vp9_systemdependent.h" #ifdef __cplusplus extern "C" { #endif #define MIN(x, y) (((x) < (y)) ? (x) : (y)) #define MAX(x, y) (((x) > (y)) ? (x) : (y)) #define ROUND_POWER_OF_TWO(value, n) \ (((value) + (1 << ((n) - 1))) >> (n)) #define ALIGN_POWER_OF_TWO(value, n) \ (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1)) // Only need this for fixed-size arrays, for structs just assign. #define vp9_copy(dest, src) { \ assert(sizeof(dest) == sizeof(src)); \ vpx_memcpy(dest, src, sizeof(src)); \ } // Use this for variably-sized arrays. #define vp9_copy_array(dest, src, n) { \ assert(sizeof(*dest) == sizeof(*src)); \ vpx_memcpy(dest, src, n * sizeof(*src)); \ } #define vp9_zero(dest) vpx_memset(&(dest), 0, sizeof(dest)) #define vp9_zero_array(dest, n) vpx_memset(dest, 0, n * sizeof(*dest)) 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); } static INLINE int get_unsigned_bits(unsigned int num_values) { return num_values > 0 ? get_msb(num_values) + 1 : 0; } #if CONFIG_VP9_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); } } // 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; #define CONVERT_TO_SHORTPTR(x) ((uint16_t*)(((uintptr_t)x) << 1)) #define CONVERT_TO_BYTEPTR(x) ((uint8_t*)(((uintptr_t)x) >> 1 )) #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_VP9_HIGHBITDEPTH #if CONFIG_DEBUG #define CHECK_MEM_ERROR(cm, lval, expr) do { \ lval = (expr); \ if (!lval) \ vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \ "Failed to allocate "#lval" at %s:%d", \ __FILE__, __LINE__); \ } while (0) #else #define CHECK_MEM_ERROR(cm, lval, expr) do { \ lval = (expr); \ if (!lval) \ vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \ "Failed to allocate "#lval); \ } while (0) #endif #define VP9_SYNC_CODE_0 0x49 #define VP9_SYNC_CODE_1 0x83 #define VP9_SYNC_CODE_2 0x42 #define VP9_FRAME_MARKER 0x2 #ifdef __cplusplus } // extern "C" #endif #endif // VP9_COMMON_VP9_COMMON_H_