1 /* 2 * Copyright (c) 2015 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 #include "vpx_dsp/mips/inv_txfm_msa.h" 12 13 void vpx_iwht4x4_16_add_msa(const int16_t *input, uint8_t *dst, 14 int32_t dst_stride) { 15 v8i16 in0, in1, in2, in3; 16 v4i32 in0_r, in1_r, in2_r, in3_r, in4_r; 17 18 /* load vector elements of 4x4 block */ 19 LD4x4_SH(input, in0, in2, in3, in1); 20 TRANSPOSE4x4_SH_SH(in0, in2, in3, in1, in0, in2, in3, in1); 21 UNPCK_R_SH_SW(in0, in0_r); 22 UNPCK_R_SH_SW(in2, in2_r); 23 UNPCK_R_SH_SW(in3, in3_r); 24 UNPCK_R_SH_SW(in1, in1_r); 25 SRA_4V(in0_r, in1_r, in2_r, in3_r, UNIT_QUANT_SHIFT); 26 27 in0_r += in2_r; 28 in3_r -= in1_r; 29 in4_r = (in0_r - in3_r) >> 1; 30 in1_r = in4_r - in1_r; 31 in2_r = in4_r - in2_r; 32 in0_r -= in1_r; 33 in3_r += in2_r; 34 35 TRANSPOSE4x4_SW_SW(in0_r, in1_r, in2_r, in3_r, in0_r, in1_r, in2_r, in3_r); 36 37 in0_r += in1_r; 38 in2_r -= in3_r; 39 in4_r = (in0_r - in2_r) >> 1; 40 in3_r = in4_r - in3_r; 41 in1_r = in4_r - in1_r; 42 in0_r -= in3_r; 43 in2_r += in1_r; 44 45 PCKEV_H4_SH(in0_r, in0_r, in1_r, in1_r, in2_r, in2_r, in3_r, in3_r, in0, in1, 46 in2, in3); 47 ADDBLK_ST4x4_UB(in0, in3, in1, in2, dst, dst_stride); 48 } 49 50 void vpx_iwht4x4_1_add_msa(const int16_t *input, uint8_t *dst, 51 int32_t dst_stride) { 52 int16_t a1, e1; 53 v8i16 in1, in0 = { 0 }; 54 55 a1 = input[0] >> UNIT_QUANT_SHIFT; 56 e1 = a1 >> 1; 57 a1 -= e1; 58 59 in0 = __msa_insert_h(in0, 0, a1); 60 in0 = __msa_insert_h(in0, 1, e1); 61 in0 = __msa_insert_h(in0, 2, e1); 62 in0 = __msa_insert_h(in0, 3, e1); 63 64 in1 = in0 >> 1; 65 in0 -= in1; 66 67 ADDBLK_ST4x4_UB(in0, in1, in1, in1, dst, dst_stride); 68 } 69 70 void vpx_idct4x4_16_add_msa(const int16_t *input, uint8_t *dst, 71 int32_t dst_stride) { 72 v8i16 in0, in1, in2, in3; 73 74 /* load vector elements of 4x4 block */ 75 LD4x4_SH(input, in0, in1, in2, in3); 76 /* rows */ 77 TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3); 78 VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3); 79 /* columns */ 80 TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3); 81 VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3); 82 /* rounding (add 2^3, divide by 2^4) */ 83 SRARI_H4_SH(in0, in1, in2, in3, 4); 84 ADDBLK_ST4x4_UB(in0, in1, in2, in3, dst, dst_stride); 85 } 86 87 void vpx_idct4x4_1_add_msa(const int16_t *input, uint8_t *dst, 88 int32_t dst_stride) { 89 int16_t out; 90 v8i16 vec; 91 92 out = ROUND_POWER_OF_TWO((input[0] * cospi_16_64), DCT_CONST_BITS); 93 out = ROUND_POWER_OF_TWO((out * cospi_16_64), DCT_CONST_BITS); 94 out = ROUND_POWER_OF_TWO(out, 4); 95 vec = __msa_fill_h(out); 96 97 ADDBLK_ST4x4_UB(vec, vec, vec, vec, dst, dst_stride); 98 } 99
