1/* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#ifndef VP9_COMMON_VP9_IDCT_H_ 12#define VP9_COMMON_VP9_IDCT_H_ 13 14#include <assert.h> 15 16#include "./vpx_config.h" 17#include "vpx/vpx_integer.h" 18#include "vp9/common/vp9_common.h" 19#include "vp9/common/vp9_enums.h" 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25 26// Constants and Macros used by all idct/dct functions 27#define DCT_CONST_BITS 14 28#define DCT_CONST_ROUNDING (1 << (DCT_CONST_BITS - 1)) 29 30#define UNIT_QUANT_SHIFT 2 31#define UNIT_QUANT_FACTOR (1 << UNIT_QUANT_SHIFT) 32 33#define pair_set_epi16(a, b) \ 34 _mm_set_epi16(b, a, b, a, b, a, b, a) 35 36// Constants: 37// for (int i = 1; i< 32; ++i) 38// printf("static const int cospi_%d_64 = %.0f;\n", i, 39// round(16384 * cos(i*M_PI/64))); 40// Note: sin(k*Pi/64) = cos((32-k)*Pi/64) 41static const int cospi_1_64 = 16364; 42static const int cospi_2_64 = 16305; 43static const int cospi_3_64 = 16207; 44static const int cospi_4_64 = 16069; 45static const int cospi_5_64 = 15893; 46static const int cospi_6_64 = 15679; 47static const int cospi_7_64 = 15426; 48static const int cospi_8_64 = 15137; 49static const int cospi_9_64 = 14811; 50static const int cospi_10_64 = 14449; 51static const int cospi_11_64 = 14053; 52static const int cospi_12_64 = 13623; 53static const int cospi_13_64 = 13160; 54static const int cospi_14_64 = 12665; 55static const int cospi_15_64 = 12140; 56static const int cospi_16_64 = 11585; 57static const int cospi_17_64 = 11003; 58static const int cospi_18_64 = 10394; 59static const int cospi_19_64 = 9760; 60static const int cospi_20_64 = 9102; 61static const int cospi_21_64 = 8423; 62static const int cospi_22_64 = 7723; 63static const int cospi_23_64 = 7005; 64static const int cospi_24_64 = 6270; 65static const int cospi_25_64 = 5520; 66static const int cospi_26_64 = 4756; 67static const int cospi_27_64 = 3981; 68static const int cospi_28_64 = 3196; 69static const int cospi_29_64 = 2404; 70static const int cospi_30_64 = 1606; 71static const int cospi_31_64 = 804; 72 73// 16384 * sqrt(2) * sin(kPi/9) * 2 / 3 74static const int sinpi_1_9 = 5283; 75static const int sinpi_2_9 = 9929; 76static const int sinpi_3_9 = 13377; 77static const int sinpi_4_9 = 15212; 78 79static INLINE int dct_const_round_shift(int input) { 80 int rv = ROUND_POWER_OF_TWO(input, DCT_CONST_BITS); 81 return (int16_t)rv; 82} 83 84typedef void (*transform_1d)(const int16_t*, int16_t*); 85 86typedef struct { 87 transform_1d cols, rows; // vertical and horizontal 88} transform_2d; 89 90void vp9_iwht4x4_add(const int16_t *input, uint8_t *dest, int stride, int eob); 91 92void vp9_idct4x4_add(const int16_t *input, uint8_t *dest, int stride, int eob); 93void vp9_idct8x8_add(const int16_t *input, uint8_t *dest, int stride, int eob); 94void vp9_idct16x16_add(const int16_t *input, uint8_t *dest, int stride, int 95 eob); 96void vp9_idct32x32_add(const int16_t *input, uint8_t *dest, int stride, 97 int eob); 98 99void vp9_iht4x4_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest, 100 int stride, int eob); 101void vp9_iht8x8_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest, 102 int stride, int eob); 103void vp9_iht16x16_add(TX_TYPE tx_type, const int16_t *input, uint8_t *dest, 104 int stride, int eob); 105 106 107#ifdef __cplusplus 108} // extern "C" 109#endif 110 111#endif // VP9_COMMON_VP9_IDCT_H_ 112