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 "vpx_dsp/mips/inv_txfm_msa.h"
15 
vp9_iht4x4_16_add_msa(const int16_t * input,uint8_t * dst,int32_t dst_stride,int32_t tx_type)16 void vp9_iht4x4_16_add_msa(const int16_t *input, uint8_t *dst,
17                            int32_t dst_stride, int32_t tx_type) {
18   v8i16 in0, in1, in2, in3;
19 
20   /* load vector elements of 4x4 block */
21   LD4x4_SH(input, in0, in1, in2, in3);
22   TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
23 
24   switch (tx_type) {
25     case DCT_DCT:
26       /* DCT in horizontal */
27       VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
28       /* DCT in vertical */
29       TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
30       VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
31       break;
32     case ADST_DCT:
33       /* DCT in horizontal */
34       VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
35       /* ADST in vertical */
36       TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
37       VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
38       break;
39     case DCT_ADST:
40       /* ADST in horizontal */
41       VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
42       /* DCT in vertical */
43       TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
44       VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
45       break;
46     case ADST_ADST:
47       /* ADST in horizontal */
48       VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
49       /* ADST in vertical */
50       TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
51       VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
52       break;
53     default:
54       assert(0);
55       break;
56   }
57 
58   /* final rounding (add 2^3, divide by 2^4) and shift */
59   SRARI_H4_SH(in0, in1, in2, in3, 4);
60   /* add block and store 4x4 */
61   ADDBLK_ST4x4_UB(in0, in1, in2, in3, dst, dst_stride);
62 }
63