118 строки
4.5 KiB
C
118 строки
4.5 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include "aom_dsp/mips/inv_txfm_msa.h"
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void aom_idct8x8_64_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, in4, in5, in6, in7;
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/* load vector elements of 8x8 block */
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LD_SH8(input, 8, in0, in1, in2, in3, in4, in5, in6, in7);
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/* rows transform */
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TRANSPOSE8x8_SH_SH(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
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in4, in5, in6, in7);
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/* 1D idct8x8 */
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AOM_IDCT8x8_1D(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
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in4, in5, in6, in7);
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/* columns transform */
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TRANSPOSE8x8_SH_SH(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
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in4, in5, in6, in7);
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/* 1D idct8x8 */
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AOM_IDCT8x8_1D(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
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in4, in5, in6, in7);
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/* final rounding (add 2^4, divide by 2^5) and shift */
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SRARI_H4_SH(in0, in1, in2, in3, 5);
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SRARI_H4_SH(in4, in5, in6, in7, 5);
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/* add block and store 8x8 */
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AOM_ADDBLK_ST8x4_UB(dst, dst_stride, in0, in1, in2, in3);
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dst += (4 * dst_stride);
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AOM_ADDBLK_ST8x4_UB(dst, dst_stride, in4, in5, in6, in7);
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}
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void aom_idct8x8_12_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, in4, in5, in6, in7;
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v8i16 s0, s1, s2, s3, s4, s5, s6, s7, k0, k1, k2, k3, m0, m1, m2, m3;
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v4i32 tmp0, tmp1, tmp2, tmp3;
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v8i16 zero = { 0 };
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/* load vector elements of 8x8 block */
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LD_SH8(input, 8, in0, in1, in2, in3, in4, in5, in6, in7);
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TRANSPOSE8X4_SH_SH(in0, in1, in2, in3, in0, in1, in2, in3);
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/* stage1 */
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ILVL_H2_SH(in3, in0, in2, in1, s0, s1);
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k0 = AOM_SET_COSPI_PAIR(cospi_28_64, -cospi_4_64);
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k1 = AOM_SET_COSPI_PAIR(cospi_4_64, cospi_28_64);
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k2 = AOM_SET_COSPI_PAIR(-cospi_20_64, cospi_12_64);
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k3 = AOM_SET_COSPI_PAIR(cospi_12_64, cospi_20_64);
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DOTP_SH4_SW(s0, s0, s1, s1, k0, k1, k2, k3, tmp0, tmp1, tmp2, tmp3);
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SRARI_W4_SW(tmp0, tmp1, tmp2, tmp3, DCT_CONST_BITS);
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PCKEV_H2_SH(zero, tmp0, zero, tmp1, s0, s1);
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PCKEV_H2_SH(zero, tmp2, zero, tmp3, s2, s3);
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BUTTERFLY_4(s0, s1, s3, s2, s4, s7, s6, s5);
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/* stage2 */
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ILVR_H2_SH(in3, in1, in2, in0, s1, s0);
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k0 = AOM_SET_COSPI_PAIR(cospi_16_64, cospi_16_64);
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k1 = AOM_SET_COSPI_PAIR(cospi_16_64, -cospi_16_64);
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k2 = AOM_SET_COSPI_PAIR(cospi_24_64, -cospi_8_64);
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k3 = AOM_SET_COSPI_PAIR(cospi_8_64, cospi_24_64);
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DOTP_SH4_SW(s0, s0, s1, s1, k0, k1, k2, k3, tmp0, tmp1, tmp2, tmp3);
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SRARI_W4_SW(tmp0, tmp1, tmp2, tmp3, DCT_CONST_BITS);
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PCKEV_H2_SH(zero, tmp0, zero, tmp1, s0, s1);
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PCKEV_H2_SH(zero, tmp2, zero, tmp3, s2, s3);
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BUTTERFLY_4(s0, s1, s2, s3, m0, m1, m2, m3);
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/* stage3 */
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s0 = __msa_ilvr_h(s6, s5);
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k1 = AOM_SET_COSPI_PAIR(-cospi_16_64, cospi_16_64);
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DOTP_SH2_SW(s0, s0, k1, k0, tmp0, tmp1);
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SRARI_W2_SW(tmp0, tmp1, DCT_CONST_BITS);
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PCKEV_H2_SH(zero, tmp0, zero, tmp1, s2, s3);
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/* stage4 */
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BUTTERFLY_8(m0, m1, m2, m3, s4, s2, s3, s7, in0, in1, in2, in3, in4, in5, in6,
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in7);
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TRANSPOSE4X8_SH_SH(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
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in4, in5, in6, in7);
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AOM_IDCT8x8_1D(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
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in4, in5, in6, in7);
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/* final rounding (add 2^4, divide by 2^5) and shift */
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SRARI_H4_SH(in0, in1, in2, in3, 5);
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SRARI_H4_SH(in4, in5, in6, in7, 5);
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/* add block and store 8x8 */
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AOM_ADDBLK_ST8x4_UB(dst, dst_stride, in0, in1, in2, in3);
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dst += (4 * dst_stride);
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AOM_ADDBLK_ST8x4_UB(dst, dst_stride, in4, in5, in6, in7);
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}
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void aom_idct8x8_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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int32_t val;
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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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val = ROUND_POWER_OF_TWO(out, 5);
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vec = __msa_fill_h(val);
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AOM_ADDBLK_ST8x4_UB(dst, dst_stride, vec, vec, vec, vec);
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dst += (4 * dst_stride);
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AOM_ADDBLK_ST8x4_UB(dst, dst_stride, vec, vec, vec, vec);
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}
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