ref: f53d3363ac41b9997e07f5d8faac1f734c8ddc9c
dir: /vpx_dsp/mips/idct8x8_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_idct8x8_64_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { v8i16 in0, in1, in2, in3, in4, in5, in6, in7; /* load vector elements of 8x8 block */ LD_SH8(input, 8, in0, in1, in2, in3, in4, in5, in6, in7); /* rows transform */ TRANSPOSE8x8_SH_SH(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3, in4, in5, in6, in7); /* 1D idct8x8 */ VP9_IDCT8x8_1D(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3, in4, in5, in6, in7); /* columns transform */ TRANSPOSE8x8_SH_SH(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3, in4, in5, in6, in7); /* 1D idct8x8 */ VP9_IDCT8x8_1D(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3, in4, in5, in6, in7); /* final rounding (add 2^4, divide by 2^5) and shift */ SRARI_H4_SH(in0, in1, in2, in3, 5); SRARI_H4_SH(in4, in5, in6, in7, 5); /* add block and store 8x8 */ VP9_ADDBLK_ST8x4_UB(dst, dst_stride, in0, in1, in2, in3); dst += (4 * dst_stride); VP9_ADDBLK_ST8x4_UB(dst, dst_stride, in4, in5, in6, in7); } void vpx_idct8x8_12_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { v8i16 in0, in1, in2, in3, in4, in5, in6, in7; v8i16 s0, s1, s2, s3, s4, s5, s6, s7, k0, k1, k2, k3, m0, m1, m2, m3; v4i32 tmp0, tmp1, tmp2, tmp3; v8i16 zero = { 0 }; /* load vector elements of 8x8 block */ LD_SH8(input, 8, in0, in1, in2, in3, in4, in5, in6, in7); TRANSPOSE8X4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3); /* stage1 */ ILVL_H2_SH(in3, in0, in2, in1, s0, s1); k0 = VP9_SET_COSPI_PAIR(cospi_28_64, -cospi_4_64); k1 = VP9_SET_COSPI_PAIR(cospi_4_64, cospi_28_64); k2 = VP9_SET_COSPI_PAIR(-cospi_20_64, cospi_12_64); k3 = VP9_SET_COSPI_PAIR(cospi_12_64, cospi_20_64); DOTP_SH4_SW(s0, s0, s1, s1, k0, k1, k2, k3, tmp0, tmp1, tmp2, tmp3); SRARI_W4_SW(tmp0, tmp1, tmp2, tmp3, DCT_CONST_BITS); PCKEV_H2_SH(zero, tmp0, zero, tmp1, s0, s1); PCKEV_H2_SH(zero, tmp2, zero, tmp3, s2, s3); BUTTERFLY_4(s0, s1, s3, s2, s4, s7, s6, s5); /* stage2 */ ILVR_H2_SH(in3, in1, in2, in0, s1, s0); k0 = VP9_SET_COSPI_PAIR(cospi_16_64, cospi_16_64); k1 = VP9_SET_COSPI_PAIR(cospi_16_64, -cospi_16_64); k2 = VP9_SET_COSPI_PAIR(cospi_24_64, -cospi_8_64); k3 = VP9_SET_COSPI_PAIR(cospi_8_64, cospi_24_64); DOTP_SH4_SW(s0, s0, s1, s1, k0, k1, k2, k3, tmp0, tmp1, tmp2, tmp3); SRARI_W4_SW(tmp0, tmp1, tmp2, tmp3, DCT_CONST_BITS); PCKEV_H2_SH(zero, tmp0, zero, tmp1, s0, s1); PCKEV_H2_SH(zero, tmp2, zero, tmp3, s2, s3); BUTTERFLY_4(s0, s1, s2, s3, m0, m1, m2, m3); /* stage3 */ s0 = __msa_ilvr_h(s6, s5); k1 = VP9_SET_COSPI_PAIR(-cospi_16_64, cospi_16_64); DOTP_SH2_SW(s0, s0, k1, k0, tmp0, tmp1); SRARI_W2_SW(tmp0, tmp1, DCT_CONST_BITS); PCKEV_H2_SH(zero, tmp0, zero, tmp1, s2, s3); /* stage4 */ BUTTERFLY_8(m0, m1, m2, m3, s4, s2, s3, s7, in0, in1, in2, in3, in4, in5, in6, in7); TRANSPOSE4X8_SH_SH(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3, in4, in5, in6, in7); VP9_IDCT8x8_1D(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3, in4, in5, in6, in7); /* final rounding (add 2^4, divide by 2^5) and shift */ SRARI_H4_SH(in0, in1, in2, in3, 5); SRARI_H4_SH(in4, in5, in6, in7, 5); /* add block and store 8x8 */ VP9_ADDBLK_ST8x4_UB(dst, dst_stride, in0, in1, in2, in3); dst += (4 * dst_stride); VP9_ADDBLK_ST8x4_UB(dst, dst_stride, in4, in5, in6, in7); } void vpx_idct8x8_1_add_msa(const int16_t *input, uint8_t *dst, int32_t dst_stride) { int16_t out; int32_t val; 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); val = ROUND_POWER_OF_TWO(out, 5); vec = __msa_fill_h(val); VP9_ADDBLK_ST8x4_UB(dst, dst_stride, vec, vec, vec, vec); dst += (4 * dst_stride); VP9_ADDBLK_ST8x4_UB(dst, dst_stride, vec, vec, vec, vec); }