ref: 446d1ee6249a2e5f79756eee455c4916191d6263
dir: /vpx_dsp/mips/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 "vpx_dsp/mips/inv_txfm_msa.h" void vpx_iwht4x4_16_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { v8i16 in0, in1, in2, in3; v4i32 in0_r, in1_r, in2_r, in3_r, in4_r; /* load vector elements of 4x4 block */ LD4x4_SH(input, in0, in2, in3, in1); TRANSPOSE4x4_SH_SH(in0, in2, in3, in1, in0, in2, in3, in1); UNPCK_R_SH_SW(in0, in0_r); UNPCK_R_SH_SW(in2, in2_r); UNPCK_R_SH_SW(in3, in3_r); UNPCK_R_SH_SW(in1, in1_r); SRA_4V(in0_r, in1_r, in2_r, in3_r, UNIT_QUANT_SHIFT); in0_r += in2_r; in3_r -= in1_r; in4_r = (in0_r - in3_r) >> 1; in1_r = in4_r - in1_r; in2_r = in4_r - in2_r; in0_r -= in1_r; in3_r += in2_r; TRANSPOSE4x4_SW_SW(in0_r, in1_r, in2_r, in3_r, in0_r, in1_r, in2_r, in3_r); in0_r += in1_r; in2_r -= in3_r; in4_r = (in0_r - in2_r) >> 1; in3_r = in4_r - in3_r; in1_r = in4_r - in1_r; in0_r -= in3_r; in2_r += in1_r; PCKEV_H4_SH(in0_r, in0_r, in1_r, in1_r, in2_r, in2_r, in3_r, in3_r, in0, in1, in2, in3); ADDBLK_ST4x4_UB(in0, in3, in1, in2, dst, dst_stride); } void vpx_iwht4x4_1_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { int16_t a1, e1; v8i16 in1, in0 = { 0 }; a1 = input[0] >> UNIT_QUANT_SHIFT; e1 = a1 >> 1; a1 -= e1; in0 = __msa_insert_h(in0, 0, a1); in0 = __msa_insert_h(in0, 1, e1); in0 = __msa_insert_h(in0, 2, e1); in0 = __msa_insert_h(in0, 3, e1); in1 = in0 >> 1; in0 -= in1; ADDBLK_ST4x4_UB(in0, in1, in1, in1, dst, dst_stride); } void vpx_idct4x4_16_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { v8i16 in0, in1, in2, in3; /* load vector elements of 4x4 block */ LD4x4_SH(input, in0, in1, in2, in3); /* rows */ TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3); VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3); /* columns */ TRANSPOSE4x4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3); VP9_IDCT4x4(in0, in1, in2, in3, in0, in1, in2, in3); /* rounding (add 2^3, divide by 2^4) */ SRARI_H4_SH(in0, in1, in2, in3, 4); ADDBLK_ST4x4_UB(in0, in1, in2, in3, dst, dst_stride); } void vpx_idct4x4_1_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { int16_t out; v8i16 vec; out = ROUND_POWER_OF_TWO((input[0] * cospi_16_64), DCT_CONST_BITS); out = ROUND_POWER_OF_TWO((out * cospi_16_64), DCT_CONST_BITS); out = ROUND_POWER_OF_TWO(out, 4); vec = __msa_fill_h(out); ADDBLK_ST4x4_UB(vec, vec, vec, vec, dst, dst_stride); }