99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vpx_dsp/mips/inv_txfm_msa.h"
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void vpx_iwht4x4_16_add_msa(const int16_t *input, uint8_t *dst,
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int32_t dst_stride) {
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v8i16 in0, in1, in2, in3;
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v4i32 in0_r, in1_r, in2_r, in3_r, in4_r;
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/* load vector elements of 4x4 block */
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LD4x4_SH(input, in0, in2, in3, in1);
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TRANSPOSE4x4_SH_SH(in0, in2, in3, in1, in0, in2, in3, in1);
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UNPCK_R_SH_SW(in0, in0_r);
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UNPCK_R_SH_SW(in2, in2_r);
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UNPCK_R_SH_SW(in3, in3_r);
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UNPCK_R_SH_SW(in1, in1_r);
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SRA_4V(in0_r, in1_r, in2_r, in3_r, UNIT_QUANT_SHIFT);
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in0_r += in2_r;
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in3_r -= in1_r;
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in4_r = (in0_r - in3_r) >> 1;
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in1_r = in4_r - in1_r;
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in2_r = in4_r - in2_r;
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in0_r -= in1_r;
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in3_r += in2_r;
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TRANSPOSE4x4_SW_SW(in0_r, in1_r, in2_r, in3_r, in0_r, in1_r, in2_r, in3_r);
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in0_r += in1_r;
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in2_r -= in3_r;
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in4_r = (in0_r - in2_r) >> 1;
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in3_r = in4_r - in3_r;
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in1_r = in4_r - in1_r;
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in0_r -= in3_r;
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in2_r += in1_r;
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PCKEV_H4_SH(in0_r, in0_r, in1_r, in1_r, in2_r, in2_r, in3_r, in3_r, in0, in1,
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in2, in3);
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ADDBLK_ST4x4_UB(in0, in3, in1, in2, dst, dst_stride);
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}
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void vpx_iwht4x4_1_add_msa(const int16_t *input, uint8_t *dst,
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int32_t dst_stride) {
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int16_t a1, e1;
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v8i16 in1, in0 = { 0 };
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a1 = input[0] >> UNIT_QUANT_SHIFT;
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e1 = a1 >> 1;
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a1 -= e1;
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in0 = __msa_insert_h(in0, 0, a1);
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in0 = __msa_insert_h(in0, 1, e1);
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in0 = __msa_insert_h(in0, 2, e1);
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in0 = __msa_insert_h(in0, 3, e1);
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in1 = in0 >> 1;
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in0 -= in1;
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ADDBLK_ST4x4_UB(in0, in1, in1, in1, dst, dst_stride);
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}
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void vpx_idct4x4_16_add_msa(const int16_t *input, uint8_t *dst,
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int32_t dst_stride) {
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v8i16 in0, in1, in2, in3;
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/* load vector elements of 4x4 block */
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LD4x4_SH(input, in0, in1, in2, in3);
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/* rows */
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TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
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VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
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/* columns */
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TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
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VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3);
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/* rounding (add 2^3, divide by 2^4) */
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SRARI_H4_SH(in0, in1, in2, in3, 4);
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ADDBLK_ST4x4_UB(in0, in1, in2, in3, dst, dst_stride);
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}
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void vpx_idct4x4_1_add_msa(const int16_t *input, uint8_t *dst,
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int32_t dst_stride) {
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int16_t out;
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v8i16 vec;
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out = ROUND_POWER_OF_TWO((input[0] * cospi_16_64), DCT_CONST_BITS);
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out = ROUND_POWER_OF_TWO((out * cospi_16_64), DCT_CONST_BITS);
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out = ROUND_POWER_OF_TWO(out, 4);
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vec = __msa_fill_h(out);
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ADDBLK_ST4x4_UB(vec, vec, vec, vec, dst, dst_stride);
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}
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