ref: 43cab8f4e84b5baadda093a5a204a746921f0ac0
dir: /vp9/common/mips/msa/vp9_idct4x4_msa.c/
/*
* Copyright (c) 2015 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.
*/
#include <assert.h>
#include "./vp9_rtcd.h"
#include "vp9/common/vp9_enums.h"
#include "vpx_dsp/mips/inv_txfm_msa.h"
void vp9_iht4x4_16_add_msa(const int16_t *input, uint8_t *dst,
int32_t dst_stride, int32_t tx_type) {
v8i16 in0, in1, in2, in3;
/* load vector elements of 4x4 block */
LD4x4_SH(input, in0, in1, in2, in3);
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
switch (tx_type) {
case DCT_DCT:
/* DCT in horizontal */
VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
/* DCT in vertical */
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
break;
case ADST_DCT:
/* DCT in horizontal */
VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
/* ADST in vertical */
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
break;
case DCT_ADST:
/* ADST in horizontal */
VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
/* DCT in vertical */
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
break;
case ADST_ADST:
/* ADST in horizontal */
VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
/* ADST in vertical */
TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
VP9_IADST4x4(in0, in1, in2, in3, in0, in1, in2, in3);
break;
default: assert(0); break;
}
/* final rounding (add 2^3, divide by 2^4) and shift */
SRARI_H4_SH(in0, in1, in2, in3, 4);
/* add block and store 4x4 */
ADDBLK_ST4x4_UB(in0, in1, in2, in3, dst, dst_stride);
}