C++ (Cpp) __msa_insert_h示例

示例#1

文件： idct4x4_msa.c 项目： Wafflespeanut/gecko-dev

void aom_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);
}

示例#2

文件： enc_msa.c 项目： garrettmoon/libwebp

static void FTransformWHT(const int16_t* in, int16_t* out) {
  v8i16 in0 = { 0 };
  v8i16 in1 = { 0 };
  v8i16 tmp0, tmp1, tmp2, tmp3;
  v8i16 out0, out1;
  const v8i16 mask0 = { 0, 1, 2, 3, 8, 9, 10, 11 };
  const v8i16 mask1 = { 4, 5, 6, 7, 12, 13, 14, 15 };
  const v8i16 mask2 = { 0, 4, 8, 12, 1, 5, 9, 13 };
  const v8i16 mask3 = { 3, 7, 11, 15, 2, 6, 10, 14 };

  in0 = __msa_insert_h(in0, 0, in[  0]);
  in0 = __msa_insert_h(in0, 1, in[ 64]);
  in0 = __msa_insert_h(in0, 2, in[128]);
  in0 = __msa_insert_h(in0, 3, in[192]);
  in0 = __msa_insert_h(in0, 4, in[ 16]);
  in0 = __msa_insert_h(in0, 5, in[ 80]);
  in0 = __msa_insert_h(in0, 6, in[144]);
  in0 = __msa_insert_h(in0, 7, in[208]);
  in1 = __msa_insert_h(in1, 0, in[ 48]);
  in1 = __msa_insert_h(in1, 1, in[112]);
  in1 = __msa_insert_h(in1, 2, in[176]);
  in1 = __msa_insert_h(in1, 3, in[240]);
  in1 = __msa_insert_h(in1, 4, in[ 32]);
  in1 = __msa_insert_h(in1, 5, in[ 96]);
  in1 = __msa_insert_h(in1, 6, in[160]);
  in1 = __msa_insert_h(in1, 7, in[224]);
  ADDSUB2(in0, in1, tmp0, tmp1);
  VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
  ADDSUB2(tmp2, tmp3, tmp0, tmp1);
  VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask2, mask3, in0, in1);
  ADDSUB2(in0, in1, tmp0, tmp1);
  VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
  ADDSUB2(tmp2, tmp3, out0, out1);
  SRAI_H2_SH(out0, out1, 1);
  ST_SH2(out0, out1, out, 8);
}