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 <assert.h>
12
13#include "vp9/common/vp9_enums.h"
14#include "vp9/encoder/mips/msa/vp9_fdct_msa.h"
15
16void vp9_fwht4x4_msa(const int16_t *input, int16_t *output,
17                     int32_t src_stride) {
18  v8i16 in0, in1, in2, in3, in4;
19
20  LD_SH4(input, src_stride, in0, in1, in2, in3);
21
22  in0 += in1;
23  in3 -= in2;
24  in4 = (in0 - in3) >> 1;
25  SUB2(in4, in1, in4, in2, in1, in2);
26  in0 -= in2;
27  in3 += in1;
28
29  TRANSPOSE4x4_SH_SH(in0, in2, in3, in1, in0, in2, in3, in1);
30
31  in0 += in2;
32  in1 -= in3;
33  in4 = (in0 - in1) >> 1;
34  SUB2(in4, in2, in4, in3, in2, in3);
35  in0 -= in3;
36  in1 += in2;
37
38  SLLI_4V(in0, in1, in2, in3, 2);
39
40  TRANSPOSE4x4_SH_SH(in0, in3, in1, in2, in0, in3, in1, in2);
41
42  ST4x2_UB(in0, output, 4);
43  ST4x2_UB(in3, output + 4, 4);
44  ST4x2_UB(in1, output + 8, 4);
45  ST4x2_UB(in2, output + 12, 4);
46}
47
48void vp9_fht4x4_msa(const int16_t *input, int16_t *output, int32_t stride,
49                    int32_t tx_type) {
50  v8i16 in0, in1, in2, in3;
51
52  LD_SH4(input, stride, in0, in1, in2, in3);
53
54  /* fdct4 pre-process */
55  {
56    v8i16 temp, mask;
57    v16i8 zero = { 0 };
58    v16i8 one = __msa_ldi_b(1);
59
60    mask = (v8i16)__msa_sldi_b(zero, one, 15);
61    SLLI_4V(in0, in1, in2, in3, 4);
62    temp = __msa_ceqi_h(in0, 0);
63    temp = (v8i16)__msa_xori_b((v16u8)temp, 255);
64    temp = mask & temp;
65    in0 += temp;
66  }
67
68  switch (tx_type) {
69    case DCT_DCT:
70      VP9_FDCT4(in0, in1, in2, in3, in0, in1, in2, in3);
71      TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
72      VP9_FDCT4(in0, in1, in2, in3, in0, in1, in2, in3);
73      break;
74    case ADST_DCT:
75      VP9_FADST4(in0, in1, in2, in3, in0, in1, in2, in3);
76      TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
77      VP9_FDCT4(in0, in1, in2, in3, in0, in1, in2, in3);
78      break;
79    case DCT_ADST:
80      VP9_FDCT4(in0, in1, in2, in3, in0, in1, in2, in3);
81      TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
82      VP9_FADST4(in0, in1, in2, in3, in0, in1, in2, in3);
83      break;
84    case ADST_ADST:
85      VP9_FADST4(in0, in1, in2, in3, in0, in1, in2, in3);
86      TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
87      VP9_FADST4(in0, in1, in2, in3, in0, in1, in2, in3);
88      break;
89    default: assert(0); break;
90  }
91
92  TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
93  ADD4(in0, 1, in1, 1, in2, 1, in3, 1, in0, in1, in2, in3);
94  SRA_4V(in0, in1, in2, in3, 2);
95  PCKEV_D2_SH(in1, in0, in3, in2, in0, in2);
96  ST_SH2(in0, in2, output, 8);
97}
98