[FFmpeg-devel] [PATCH] avcodec/mips: msa optimizations for vc1dsp
Shiyou Yin
yinshiyou-hf at loongson.cn
Tue Oct 15 06:50:58 EEST 2019
>diff --git a/libavcodec/mips/vc1dsp_msa.c b/libavcodec/mips/vc1dsp_msa.c
>new file mode 100644
>index 0000000..1619ea4
>--- /dev/null
>+++ b/libavcodec/mips/vc1dsp_msa.c
>@@ -0,0 +1,483 @@
>+/*
>+ * Loongson SIMD optimized vc1dsp
>+ *
>+ * Copyright (c) 2019 Loongson Technology Corporation Limited
>+ * gxw <guxiwei-hf at loongson.cn>
>+ *
>+ * This file is part of FFmpeg.
>+ *
>+ * FFmpeg is free software; you can redistribute it and/or
>+ * modify it under the terms of the GNU Lesser General Public
>+ * License as published by the Free Software Foundation; either
>+ * version 2.1 of the License, or (at your option) any later version.
>+ *
>+ * FFmpeg is distributed in the hope that it will be useful,
>+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
>+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
>+ * Lesser General Public License for more details.
>+ *
>+ * You should have received a copy of the GNU Lesser General Public
>+ * License along with FFmpeg; if not, write to the Free Software
>+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
>+ */
>+
>+#include "vc1dsp_mips.h"
>+#include "constants.h"
>+#include "libavutil/mips/generic_macros_msa.h"
>+
>+void ff_vc1_inv_trans_8x8_msa(int16_t block[64])
>+{
>+ v8i16 in0, in1, in2, in3, in4, in5, in6, in7;
>+ v4i32 in_r0, in_r1, in_r2, in_r3, in_r4, in_r5, in_r6, in_r7;
>+ v4i32 in_l0, in_l1, in_l2, in_l3, in_l4, in_l5, in_l6, in_l7;
>+ v4i32 t_r1, t_r2, t_r3, t_r4, t_r5, t_r6, t_r7, t_r8;
>+ v4i32 t_l1, t_l2, t_l3, t_l4, t_l5, t_l6, t_l7, t_l8;
>+ v4i32 cnst_12 = {12, 12, 12, 12};
>+ v4i32 cnst_4 = {4, 4, 4, 4};
>+ v4i32 cnst_16 = {16, 16, 16, 16};
>+ v4i32 cnst_6 = {6, 6, 6, 6};
>+ v4i32 cnst_15 = {15, 15, 15, 15};
>+ v4i32 cnst_9 = {9, 9, 9, 9};
>+ v4i32 cnst_1 = {1, 1, 1, 1};
>+ v4i32 cnst_64 = {64, 64, 64, 64};
>+
>+ LD_SH8(block, 8, in0, in1, in2, in3, in4, in5, in6, in7);
>+ UNPCK_SH_SW(in0, in_r0, in_l0);
>+ UNPCK_SH_SW(in1, in_r1, in_l1);
>+ UNPCK_SH_SW(in2, in_r2, in_l2);
>+ UNPCK_SH_SW(in3, in_r3, in_l3);
>+ UNPCK_SH_SW(in4, in_r4, in_l4);
>+ UNPCK_SH_SW(in5, in_r5, in_l5);
>+ UNPCK_SH_SW(in6, in_r6, in_l6);
>+ UNPCK_SH_SW(in7, in_r7, in_l7);
>+ // First loop
>+ t_r1 = cnst_12 * (in_r0 + in_r4) + cnst_4;
>+ t_l1 = cnst_12 * (in_l0 + in_l4) + cnst_4;
>+ t_r2 = cnst_12 * (in_r0 - in_r4) + cnst_4;
>+ t_l2 = cnst_12 * (in_l0 - in_l4) + cnst_4;
>+ t_r3 = cnst_16 * in_r2 + cnst_6 * in_r6;
>+ t_l3 = cnst_16 * in_l2 + cnst_6 * in_l6;
>+ t_r4 = cnst_6 * in_r2 - cnst_16 * in_r6;
>+ t_l4 = cnst_6 * in_l2 - cnst_16 * in_l6;
>+
>+ ADD4(t_r1, t_r3, t_l1, t_l3, t_r2, t_r4, t_l2, t_l4, t_r5, t_l5, t_r6, t_l6);
>+ SUB4(t_r2, t_r4, t_l2, t_l4, t_r1, t_r3, t_l1, t_l3, t_r7, t_l7, t_r8, t_l8);
>+ t_r1 = cnst_16 * in_r1 + cnst_15 * in_r3 + cnst_9 * in_r5 + cnst_4 * in_r7;
>+ t_l1 = cnst_16 * in_l1 + cnst_15 * in_l3 + cnst_9 * in_l5 + cnst_4 * in_l7;
>+ t_r2 = cnst_15 * in_r1 - cnst_4 * in_r3 - cnst_16 * in_r5 - cnst_9 * in_r7;
>+ t_l2 = cnst_15 * in_l1 - cnst_4 * in_l3 - cnst_16 * in_l5 - cnst_9 * in_l7;
>+ t_r3 = cnst_9 * in_r1 - cnst_16 * in_r3 + cnst_4 * in_r5 + cnst_15 * in_r7;
>+ t_l3 = cnst_9 * in_l1 - cnst_16 * in_l3 + cnst_4 * in_l5 + cnst_15 * in_l7;
>+ t_r4 = cnst_4 * in_r1 - cnst_9 * in_r3 + cnst_15 * in_r5 - cnst_16 * in_r7;
>+ t_l4 = cnst_4 * in_l1 - cnst_9 * in_l3 + cnst_15 * in_l5 - cnst_16 * in_l7;
>+
>+ in_r0 = (t_r5 + t_r1) >> 3;
>+ in_l0 = (t_l5 + t_l1) >> 3;
>+ in_r1 = (t_r6 + t_r2) >> 3;
>+ in_l1 = (t_l6 + t_l2) >> 3;
>+ in_r2 = (t_r7 + t_r3) >> 3;
>+ in_l2 = (t_l7 + t_l3) >> 3;
>+ in_r3 = (t_r8 + t_r4) >> 3;
>+ in_l3 = (t_l8 + t_l4) >> 3;
>+
>+ in_r4 = (t_r8 - t_r4) >> 3;
>+ in_l4 = (t_l8 - t_l4) >> 3;
>+ in_r5 = (t_r7 - t_r3) >> 3;
>+ in_l5 = (t_l7 - t_l3) >> 3;
>+ in_r6 = (t_r6 - t_r2) >> 3;
>+ in_l6 = (t_l6 - t_l2) >> 3;
>+ in_r7 = (t_r5 - t_r1) >> 3;
>+ in_l7 = (t_l5 - t_l1) >> 3;
>+ TRANSPOSE4x4_SW_SW(in_r0, in_r1, in_r2, in_r3, in_r0, in_r1, in_r2, in_r3);
>+ TRANSPOSE4x4_SW_SW(in_l0, in_l1, in_l2, in_l3, t_l1, t_l2, t_l3, t_l4);
>+ TRANSPOSE4x4_SW_SW(in_r4, in_r5, in_r6, in_r7, in_l0, in_l1, in_l2, in_l3);
>+ TRANSPOSE4x4_SW_SW(in_l4, in_l5, in_l6, in_l7, in_l4, in_l5, in_l6, in_l7);
>+ in_r4 = t_l1, in_r5 = t_l2, in_r6 = t_l3, in_r7 = t_l4;
It's better to transpose 'in_l0, in_l1, in_l2, in_l3' directly into themselves, and ' in_r4, in_r5, in_r6, in_r7' the same.
>+ // Second loop
>+ t_r1 = cnst_12 * (in_r0 + in_r4) + cnst_64;
>+ t_l1 = cnst_12 * (in_l0 + in_l4) + cnst_64;
>+ t_r2 = cnst_12 * (in_r0 - in_r4) + cnst_64;
>+ t_l2 = cnst_12 * (in_l0 - in_l4) + cnst_64;
>+ t_r3 = cnst_16 * in_r2 + cnst_6 * in_r6;
>+ t_l3 = cnst_16 * in_l2 + cnst_6 * in_l6;
>+ t_r4 = cnst_6 * in_r2 - cnst_16 * in_r6;
>+ t_l4 = cnst_6 * in_l2 - cnst_16 * in_l6;
>+
>+ ADD4(t_r1, t_r3, t_l1, t_l3, t_r2, t_r4, t_l2, t_l4, t_r5, t_l5, t_r6, t_l6);
>+ SUB4(t_r2, t_r4, t_l2, t_l4, t_r1, t_r3, t_l1, t_l3, t_r7, t_l7, t_r8, t_l8);
>+ t_r1 = cnst_16 * in_r1 + cnst_15 * in_r3 + cnst_9 * in_r5 + cnst_4 * in_r7;
>+ t_l1 = cnst_16 * in_l1 + cnst_15 * in_l3 + cnst_9 * in_l5 + cnst_4 * in_l7;
>+ t_r2 = cnst_15 * in_r1 - cnst_4 * in_r3 - cnst_16 * in_r5 - cnst_9 * in_r7;
>+ t_l2 = cnst_15 * in_l1 - cnst_4 * in_l3 - cnst_16 * in_l5 - cnst_9 * in_l7;
>+ t_r3 = cnst_9 * in_r1 - cnst_16 * in_r3 + cnst_4 * in_r5 + cnst_15 * in_r7;
>+ t_l3 = cnst_9 * in_l1 - cnst_16 * in_l3 + cnst_4 * in_l5 + cnst_15 * in_l7;
>+ t_r4 = cnst_4 * in_r1 - cnst_9 * in_r3 + cnst_15 * in_r5 - cnst_16 * in_r7;
>+ t_l4 = cnst_4 * in_l1 - cnst_9 * in_l3 + cnst_15 * in_l5 - cnst_16 * in_l7;
>+
>+ in_r0 = (t_r5 + t_r1) >> 7;
>+ in_l0 = (t_l5 + t_l1) >> 7;
>+ in_r1 = (t_r6 + t_r2) >> 7;
>+ in_l1 = (t_l6 + t_l2) >> 7;
>+ in_r2 = (t_r7 + t_r3) >> 7;
>+ in_l2 = (t_l7 + t_l3) >> 7;
>+ in_r3 = (t_r8 + t_r4) >> 7;
>+ in_l3 = (t_l8 + t_l4) >> 7;
>+
>+ in_r4 = (t_r8 - t_r4 + cnst_1) >> 7;
>+ in_l4 = (t_l8 - t_l4 + cnst_1) >> 7;
>+ in_r5 = (t_r7 - t_r3 + cnst_1) >> 7;
>+ in_l5 = (t_l7 - t_l3 + cnst_1) >> 7;
>+ in_r6 = (t_r6 - t_r2 + cnst_1) >> 7;
>+ in_l6 = (t_l6 - t_l2 + cnst_1) >> 7;
>+ in_r7 = (t_r5 - t_r1 + cnst_1) >> 7;
>+ in_l7 = (t_l5 - t_l1 + cnst_1) >> 7;
>+ PCKEV_H4_SH(in_l0, in_r0, in_l1, in_r1, in_l2, in_r2, in_l3, in_r3,
>+ in0, in1, in2, in3);
>+ PCKEV_H4_SH(in_l4, in_r4, in_l5, in_r5, in_l6, in_r6, in_l7, in_r7,
>+ in4, in5, in6, in7);
>+ ST_SH8(in0, in1, in2, in3, in4, in5, in6, in7, block, 8);
>+}
>+
>+void ff_vc1_inv_trans_4x8_msa(uint8_t *dest, ptrdiff_t linesize, int16_t *block)
>+{
>+ v8i16 in0, in1, in2, in3, in4, in5, in6, in7;
>+ v4i32 in_r0, in_r1, in_r2, in_r3, in_r4, in_r5, in_r6, in_r7;
>+ v4i32 t1, t2, t3, t4, t5, t6, t7, t8;
>+ v4i32 dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7;
>+ v16i8 zero_m = { 0 };
>+ v4i32 cnst_17 = {17, 17, 17, 17};
>+ v4i32 cnst_22 = {22, 22, 22, 22};
>+ v4i32 cnst_10 = {10, 10, 10, 10};
>+ v4i32 cnst_12 = {12, 12, 12, 12};
>+ v4i32 cnst_64 = {64, 64, 64, 64};
>+ v4i32 cnst_16 = {16, 16, 16, 16};
>+ v4i32 cnst_15 = {15, 15, 15, 15};
>+ v4i32 cnst_4 = {4, 4, 4, 4};
>+ v4i32 cnst_6 = {6, 6, 6, 6};
>+ v4i32 cnst_9 = {9, 9, 9, 9};
>+ v4i32 cnst_1 = {1, 1, 1, 1};
>+
>+ LD_SH8(block, 8, in0, in1, in2, in3, in4, in5, in6, in7);
>+ UNPCK_R_SH_SW(in0, in_r0);
>+ UNPCK_R_SH_SW(in1, in_r1);
>+ UNPCK_R_SH_SW(in2, in_r2);
>+ UNPCK_R_SH_SW(in3, in_r3);
>+ UNPCK_R_SH_SW(in4, in_r4);
>+ UNPCK_R_SH_SW(in5, in_r5);
>+ UNPCK_R_SH_SW(in6, in_r6);
>+ UNPCK_R_SH_SW(in7, in_r7);
>+ // First loop
>+ TRANSPOSE4x4_SW_SW(in_r0, in_r1, in_r2, in_r3, in_r0, in_r1, in_r2, in_r3);
>+ TRANSPOSE4x4_SW_SW(in_r4, in_r5, in_r6, in_r7, in_r4, in_r5, in_r6, in_r7);
>+ t1 = cnst_17 * (in_r0 + in_r2) + cnst_4;
>+ t5 = cnst_17 * (in_r4 + in_r6) + cnst_4;
>+ t2 = cnst_17 * (in_r0 - in_r2) + cnst_4;
>+ t6 = cnst_17 * (in_r4 - in_r6) + cnst_4;
>+ t3 = cnst_22 * in_r1 + cnst_10 * in_r3;
>+ t7 = cnst_22 * in_r5 + cnst_10 * in_r7;
>+ t4 = cnst_22 * in_r3 - cnst_10 * in_r1;
>+ t8 = cnst_22 * in_r7 - cnst_10 * in_r5;
>+
>+ in_r0 = (t1 + t3) >> 3;
>+ in_r4 = (t5 + t7) >> 3;
>+ in_r1 = (t2 - t4) >> 3;
>+ in_r5 = (t6 - t8) >> 3;
>+ in_r2 = (t2 + t4) >> 3;
>+ in_r6 = (t6 + t8) >> 3;
>+ in_r3 = (t1 - t3) >> 3;
>+ in_r7 = (t5 - t7) >> 3;
>+ TRANSPOSE4x4_SW_SW(in_r0, in_r1, in_r2, in_r3, in_r0, in_r1, in_r2, in_r3);
>+ TRANSPOSE4x4_SW_SW(in_r4, in_r5, in_r6, in_r7, in_r4, in_r5, in_r6, in_r7);
>+ PCKEV_H4_SH(in_r1, in_r0, in_r3, in_r2, in_r5, in_r4, in_r7, in_r6,
>+ in0, in1, in2, in3);
>+ ST_D8(in0, in1, in2, in3, 0, 1, 0, 1, 0, 1, 0, 1, block, 8);
>+ // Second loop
>+ t1 = cnst_12 * (in_r0 + in_r4) + cnst_64;
>+ t2 = cnst_12 * (in_r0 - in_r4) + cnst_64;
>+ t3 = cnst_16 * in_r2 + cnst_6 * in_r6;
>+ t4 = cnst_6 * in_r2 - cnst_16 * in_r6;
>+ t5 = t1 + t3, t6 = t2 + t4;
>+ t7 = t2 - t4, t8 = t1 - t3;
>+ t1 = cnst_16 * in_r1 + cnst_15 * in_r3 + cnst_9 * in_r5 + cnst_4 * in_r7;
>+ t2 = cnst_15 * in_r1 - cnst_4 * in_r3 - cnst_16 * in_r5 - cnst_9 * in_r7;
>+ t3 = cnst_9 * in_r1 - cnst_16 * in_r3 + cnst_4 * in_r5 + cnst_15 * in_r7;
>+ t4 = cnst_4 * in_r1 - cnst_9 * in_r3 + cnst_15 * in_r5 - cnst_16 * in_r7;
>+ LD_SW8(dest, linesize, dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7);
>+ ILVR_B8_SW(zero_m, dst0, zero_m, dst1, zero_m, dst2, zero_m, dst3,
>+ zero_m, dst4, zero_m, dst5, zero_m, dst6, zero_m, dst7,
>+ dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7);
>+ ILVR_H4_SW(zero_m, dst0, zero_m, dst1, zero_m, dst2, zero_m, dst3,
>+ dst0, dst1, dst2, dst3);
>+ ILVR_H4_SW(zero_m, dst4, zero_m, dst5, zero_m, dst6, zero_m, dst7,
>+ dst4, dst5, dst6, dst7);
>+ in_r0 = (t5 + t1) >> 7;
>+ in_r1 = (t6 + t2) >> 7;
>+ in_r2 = (t7 + t3) >> 7;
>+ in_r3 = (t8 + t4) >> 7;
>+ in_r4 = (t8 - t4 + cnst_1) >> 7;
>+ in_r5 = (t7 - t3 + cnst_1) >> 7;
>+ in_r6 = (t6 - t2 + cnst_1) >> 7;
>+ in_r7 = (t5 - t1 + cnst_1) >> 7;
>+ ADD4(in_r0, dst0, in_r1, dst1, in_r2, dst2, in_r3, dst3,
>+ in_r0, in_r1, in_r2, in_r3);
>+ ADD4(in_r4, dst4, in_r5, dst5, in_r6, dst6, in_r7, dst7,
>+ in_r4, in_r5, in_r6, in_r7);
>+ CLIP_SW8_0_255(in_r0, in_r1, in_r2, in_r3, in_r4, in_r5, in_r6, in_r7);
>+ PCKEV_H4_SH(in_r1, in_r0, in_r3, in_r2, in_r5, in_r4, in_r7, in_r6,
>+ in0, in1, in2, in3);
>+ PCKEV_B2_SH(in1, in0, in3, in2, in0, in1);
>+ ST_W8(in0, in1, 0, 1, 2, 3, 0, 1, 2, 3, dest, linesize);
>+}
>+
>+void ff_vc1_inv_trans_8x4_msa(uint8_t *dest, ptrdiff_t linesize, int16_t *block)
>+{
>+ v4i32 in0, in1, in2, in3, in4, in5, in6, in7;
>+ v4i32 t1, t2, t3, t4, t5, t6, t7, t8;
>+ v4i32 dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7;
>+ v16i8 zero_m = { 0 };
>+ v4i32 cnst_17 = {17, 17, 17, 17};
>+ v4i32 cnst_22 = {22, 22, 22, 22};
>+ v4i32 cnst_10 = {10, 10, 10, 10};
>+ v4i32 cnst_12 = {12, 12, 12, 12};
>+ v4i32 cnst_64 = {64, 64, 64, 64};
>+ v4i32 cnst_16 = {16, 16, 16, 16};
>+ v4i32 cnst_15 = {15, 15, 15, 15};
>+ v4i32 cnst_4 = {4, 4, 4, 4};
>+ v4i32 cnst_6 = {6, 6, 6, 6};
>+ v4i32 cnst_9 = {9, 9, 9, 9};
>+
>+ LD_SW4(block, 8, t1, t2, t3, t4);
>+ UNPCK_SH_SW(t1, in0, in4);
>+ UNPCK_SH_SW(t2, in1, in5);
>+ UNPCK_SH_SW(t3, in2, in6);
>+ UNPCK_SH_SW(t4, in3, in7);
>+ TRANSPOSE4x4_SW_SW(in0, in1, in2, in3, in0, in1, in2, in3);
>+ TRANSPOSE4x4_SW_SW(in4, in5, in6, in7, in4, in5, in6, in7);
>+ // First loop
>+ t1 = cnst_12 * (in0 + in4) + cnst_4;
>+ t2 = cnst_12 * (in0 - in4) + cnst_4;
>+ t3 = cnst_16 * in2 + cnst_6 * in6;
>+ t4 = cnst_6 * in2 - cnst_16 * in6;
>+ t5 = t1 + t3, t6 = t2 + t4;
>+ t7 = t2 - t4, t8 = t1 - t3;
>+ t1 = cnst_16 * in1 + cnst_15 * in3 + cnst_9 * in5 + cnst_4 * in7;
>+ t2 = cnst_15 * in1 - cnst_4 * in3 - cnst_16 * in5 - cnst_9 * in7;
>+ t3 = cnst_9 * in1 - cnst_16 * in3 + cnst_4 * in5 + cnst_15 * in7;
>+ t4 = cnst_4 * in1 - cnst_9 * in3 + cnst_15 * in5 - cnst_16 * in7;
>+ in0 = (t5 + t1) >> 3;
>+ in1 = (t6 + t2) >> 3;
>+ in2 = (t7 + t3) >> 3;
>+ in3 = (t8 + t4) >> 3;
>+ in4 = (t8 - t4) >> 3;
>+ in5 = (t7 - t3) >> 3;
>+ in6 = (t6 - t2) >> 3;
>+ in7 = (t5 - t1) >> 3;
>+ TRANSPOSE4x4_SW_SW(in0, in1, in2, in3, in0, in1, in2, in3);
>+ TRANSPOSE4x4_SW_SW(in4, in5, in6, in7, in4, in5, in6, in7);
>+ PCKEV_H4_SW(in4, in0, in5, in1, in6, in2, in7, in3, t1, t2, t3, t4);
>+ ST_SW4(t1, t2, t3, t4, block, 8);
>+ // Second loop
>+ LD_SW4(dest, linesize, dst0, dst1, dst2, dst3);
>+ ILVR_B4_SW(zero_m, dst0, zero_m, dst1, zero_m, dst2, zero_m, dst3,
>+ dst0, dst1, dst2, dst3);
>+ ILVL_H4_SW(zero_m, dst0, zero_m, dst1, zero_m, dst2, zero_m, dst3,
>+ dst4, dst5, dst6, dst7);
>+ ILVR_H4_SW(zero_m, dst0, zero_m, dst1, zero_m, dst2, zero_m, dst3,
>+ dst0, dst1, dst2, dst3);
>+ // Right part
>+ t1 = cnst_17 * (in0 + in2) + cnst_64;
>+ t2 = cnst_17 * (in0 - in2) + cnst_64;
>+ t3 = cnst_22 * in1 + cnst_10 * in3;
>+ t4 = cnst_22 * in3 - cnst_10 * in1;
>+ in0 = (t1 + t3) >> 7;
>+ in1 = (t2 - t4) >> 7;
>+ in2 = (t2 + t4) >> 7;
>+ in3 = (t1 - t3) >> 7;
>+ ADD4(in0, dst0, in1, dst1, in2, dst2, in3, dst3, in0, in1, in2, in3);
>+ CLIP_SW4_0_255(in0, in1, in2, in3);
>+ // Left part
>+ t5 = cnst_17 * (in4 + in6) + cnst_64;
>+ t6 = cnst_17 * (in4 - in6) + cnst_64;
>+ t7 = cnst_22 * in5 + cnst_10 * in7;
>+ t8 = cnst_22 * in7 - cnst_10 * in5;
>+ in4 = (t5 + t7) >> 7;
>+ in5 = (t6 - t8) >> 7;
>+ in6 = (t6 + t8) >> 7;
>+ in7 = (t5 - t7) >> 7;
>+ ADD4(in4, dst4, in5, dst5, in6, dst6, in7, dst7, in4, in5, in6, in7);
>+ CLIP_SW4_0_255(in4, in5, in6, in7);
>+ PCKEV_H4_SW(in4, in0, in5, in1, in6, in2, in7, in3, in0, in1, in2, in3);
>+ PCKEV_B2_SW(in1, in0, in3, in2, in0, in1);
>+ ST_D4(in0, in1, 0, 1, 0, 1, dest, linesize);
>+}
>+
>+static void put_vc1_mspel_mc_h_v_msa(uint8_t *dst, const uint8_t *src,
>+ ptrdiff_t stride, int hmode, int vmode,
>+ int rnd)
>+{
>+ v8i16 in_r0, in_r1, in_r2, in_r3, in_l0, in_l1, in_l2, in_l3;
>+ v8i16 t0, t1, t2, t3, t4, t5, t6, t7;
>+ v8i16 t8, t9, t10, t11, t12, t13, t14, t15;
>+ v8i16 cnst_para0, cnst_para1, cnst_para2, cnst_para3, cnst_r;
>+ static const int shift_value[] = {0, 5, 1, 5};
>+ int shift = (shift_value[hmode] + shift_value[vmode]) >> 1;
>+ int r = (1 << (shift - 1)) + rnd - 1;
>+ cnst_r = __msa_fill_h(r);
>+ src -= 1, src -= stride;
>+ if (vmode == 1) {
>+ cnst_para0 = __msa_ldi_h(4);
>+ cnst_para1 = __msa_ldi_h(53);
>+ cnst_para2 = __msa_ldi_h(18);
>+ cnst_para3 = __msa_ldi_h(3);
>+ } else if (vmode == 2) {
>+ cnst_para0 = __msa_ldi_h(1);
>+ cnst_para1 = __msa_ldi_h(9);
>+ cnst_para2 = __msa_ldi_h(9);
>+ cnst_para3 = __msa_ldi_h(1);
>+ } else {
>+ cnst_para0 = __msa_ldi_h(3);
>+ cnst_para1 = __msa_ldi_h(18);
>+ cnst_para2 = __msa_ldi_h(53);
>+ cnst_para3 = __msa_ldi_h(4);
>+ }
>+ LD_SH4(src, stride, in_l0, in_l1, in_l2, in_l3);
>+ UNPCK_UB_SH(in_l0, in_r0, in_l0);
>+ UNPCK_UB_SH(in_l1, in_r1, in_l1);
>+ UNPCK_UB_SH(in_l2, in_r2, in_l2);
>+ UNPCK_UB_SH(in_l3, in_r3, in_l3);
>+ // row 0
>+ t0 = cnst_para1 * in_r1 + cnst_para2 * in_r2
>+ - cnst_para0 * in_r0 - cnst_para3 * in_r3;
>+ t8 = cnst_para1 * in_l1 + cnst_para2 * in_l2
>+ - cnst_para0 * in_l0 - cnst_para3 * in_l3;
>+ in_l0 = LD_SH(src + 4 * stride);
>+ UNPCK_UB_SH(in_l0, in_r0, in_l0);
>+ // row 1
>+ t1 = cnst_para1 * in_r2 + cnst_para2 * in_r3
>+ - cnst_para0 * in_r1 - cnst_para3 * in_r0;
>+ t9 = cnst_para1 * in_l2 + cnst_para2 * in_l3
>+ - cnst_para0 * in_l1 - cnst_para3 * in_l0;
>+ in_l1 = LD_SH(src + 5 * stride);
>+ UNPCK_UB_SH(in_l1, in_r1, in_l1);
>+ // row 2
>+ t2 = cnst_para1 * in_r3 + cnst_para2 * in_r0
>+ - cnst_para0 * in_r2 - cnst_para3 * in_r1;
>+ t10 = cnst_para1 * in_l3 + cnst_para2 * in_l0
>+ - cnst_para0 * in_l2 - cnst_para3 * in_l1;
>+ in_l2 = LD_SH(src + 6 * stride);
>+ UNPCK_UB_SH(in_l2, in_r2, in_l2);
>+ // row 3
>+ t3 = cnst_para1 * in_r0 + cnst_para2 * in_r1
>+ - cnst_para0 * in_r3 - cnst_para3 * in_r2;
>+ t11 = cnst_para1 * in_l0 + cnst_para2 * in_l1
>+ - cnst_para0 * in_l3 - cnst_para3 * in_l2;
>+ in_l3 = LD_SH(src + 7 * stride);
>+ UNPCK_UB_SH(in_l3, in_r3, in_l3);
>+ // row 4
>+ t4 = cnst_para1 * in_r1 + cnst_para2 * in_r2
>+ - cnst_para0 * in_r0 - cnst_para3 * in_r3;
>+ t12 = cnst_para1 * in_l1 + cnst_para2 * in_l2
>+ - cnst_para0 * in_l0 - cnst_para3 * in_l3;
>+ in_l0 = LD_SH(src + 8 * stride);
>+ UNPCK_UB_SH(in_l0, in_r0, in_l0);
>+ // row 5
>+ t5 = cnst_para1 * in_r2 + cnst_para2 * in_r3
>+ - cnst_para0 * in_r1 - cnst_para3 * in_r0;
>+ t13 = cnst_para1 * in_l2 + cnst_para2 * in_l3
>+ - cnst_para0 * in_l1 - cnst_para3 * in_l0;
>+ in_l1 = LD_SH(src + 9 * stride);
>+ UNPCK_UB_SH(in_l1, in_r1, in_l1);
>+ // row 6
>+ t6 = cnst_para1 * in_r3 + cnst_para2 * in_r0
>+ - cnst_para0 * in_r2 - cnst_para3 * in_r1;
>+ t14 = cnst_para1 * in_l3 + cnst_para2 * in_l0
>+ - cnst_para0 * in_l2 - cnst_para3 * in_l1;
>+ in_l2 = LD_SH(src + 10 * stride);
>+ UNPCK_UB_SH(in_l2, in_r2, in_l2);
>+ // row 7
>+ t7 = cnst_para1 * in_r0 + cnst_para2 * in_r1
>+ - cnst_para0 * in_r3 - cnst_para3 * in_r2;
>+ t15 = cnst_para1 * in_l0 + cnst_para2 * in_l1
>+ - cnst_para0 * in_l3 - cnst_para3 * in_l2;
>+
>+ ADD4(t0, cnst_r, t1, cnst_r, t2, cnst_r, t3, cnst_r, t0, t1, t2, t3);
>+ ADD4(t4, cnst_r, t5, cnst_r, t6, cnst_r, t7, cnst_r, t4, t5, t6, t7);
>+ ADD4(t8, cnst_r, t9, cnst_r, t10, cnst_r, t11, cnst_r,
>+ t8, t9, t10, t11);
>+ ADD4(t12, cnst_r, t13, cnst_r, t14, cnst_r, t15, cnst_r,
>+ t12, t13, t14, t15);
>+ t0 >>= shift, t1 >>= shift, t2 >>= shift, t3 >>= shift;
>+ t4 >>= shift, t5 >>= shift, t6 >>= shift, t7 >>= shift;
>+ t8 >>= shift, t9 >>= shift, t10 >>= shift, t11 >>= shift;
>+ t12 >>= shift, t13 >>= shift, t14 >>= shift, t15 >>= shift;
>+ TRANSPOSE8x8_SH_SH(t0, t1, t2, t3, t4, t5, t6, t7,
>+ t0, t1, t2, t3, t4, t5, t6, t7);
>+ TRANSPOSE8x8_SH_SH(t8, t9, t10, t11, t12, t13, t14, t15,
>+ t8, t9, t10, t11, t12, t13, t14, t15);
>+ if (hmode == 1) {
>+ cnst_para0 = __msa_ldi_h(4);
>+ cnst_para1 = __msa_ldi_h(53);
>+ cnst_para2 = __msa_ldi_h(18);
>+ cnst_para3 = __msa_ldi_h(3);
>+ } else if (hmode == 2) {
>+ cnst_para0 = __msa_ldi_h(1);
>+ cnst_para1 = __msa_ldi_h(9);
>+ cnst_para2 = __msa_ldi_h(9);
>+ cnst_para3 = __msa_ldi_h(1);
>+ } else {
>+ cnst_para0 = __msa_ldi_h(3);
>+ cnst_para1 = __msa_ldi_h(18);
>+ cnst_para2 = __msa_ldi_h(53);
>+ cnst_para3 = __msa_ldi_h(4);
>+ }
>+ r = 64 - rnd;
>+ cnst_r = __msa_fill_h(r);
>+ // col 0 ~ 7
>+ t0 = cnst_para1 * t1 + cnst_para2 * t2 - cnst_para0 * t0 - cnst_para3 * t3;
>+ t1 = cnst_para1 * t2 + cnst_para2 * t3 - cnst_para0 * t1 - cnst_para3 * t4;
>+ t2 = cnst_para1 * t3 + cnst_para2 * t4 - cnst_para0 * t2 - cnst_para3 * t5;
>+ t3 = cnst_para1 * t4 + cnst_para2 * t5 - cnst_para0 * t3 - cnst_para3 * t6;
>+ t4 = cnst_para1 * t5 + cnst_para2 * t6 - cnst_para0 * t4 - cnst_para3 * t7;
>+ t5 = cnst_para1 * t6 + cnst_para2 * t7 - cnst_para0 * t5 - cnst_para3 * t8;
>+ t6 = cnst_para1 * t7 + cnst_para2 * t8 - cnst_para0 * t6 - cnst_para3 * t9;
>+ t7 = cnst_para1 * t8 + cnst_para2 * t9 - cnst_para0 * t7 - cnst_para3 * t10;
>+ ADD4(t0, cnst_r, t1, cnst_r, t2, cnst_r, t3, cnst_r, t0, t1, t2, t3);
>+ ADD4(t4, cnst_r, t5, cnst_r, t6, cnst_r, t7, cnst_r, t4, t5, t6, t7);
>+ t0 >>= 7, t1 >>= 7, t2 >>= 7, t3 >>= 7;
>+ t4 >>= 7, t5 >>= 7, t6 >>= 7, t7 >>= 7;
>+ TRANSPOSE8x8_SH_SH(t0, t1, t2, t3, t4, t5, t6, t7,
>+ t0, t1, t2, t3, t4, t5, t6, t7);
>+ CLIP_SH8_0_255(t0, t1, t2, t3, t4, t5, t6, t7);
>+ PCKEV_B4_SH(t1, t0, t3, t2, t5, t4, t7, t6, t0, t1, t2, t3);
>+ ST_D8(t0, t1, t2, t3, 0, 1, 0, 1, 0, 1, 0, 1, dst, stride);
>+}
>+
>+#define PUT_VC1_MSPEL_MC_MSA(hmode, vmode) \
>+void ff_put_vc1_mspel_mc ## hmode ## vmode ## _msa(uint8_t *dst, \
>+ const uint8_t *src, \
>+ ptrdiff_t stride, int rnd) \
>+{ \
>+ put_vc1_mspel_mc_h_v_msa(dst, src, stride, hmode, vmode, rnd); \
>+} \
>+void ff_put_vc1_mspel_mc ## hmode ## vmode ## _16_msa(uint8_t *dst, \
>+ const uint8_t *src, \
>+ ptrdiff_t stride, int rnd) \
>+{ \
>+ put_vc1_mspel_mc_h_v_msa(dst, src, stride, hmode, vmode, rnd); \
>+ put_vc1_mspel_mc_h_v_msa(dst + 8, src + 8, stride, hmode, vmode, rnd); \
>+ dst += 8 * stride, src += 8 * stride; \
>+ put_vc1_mspel_mc_h_v_msa(dst, src, stride, hmode, vmode, rnd); \
>+ put_vc1_mspel_mc_h_v_msa(dst + 8, src + 8, stride, hmode, vmode, rnd); \
>+}
>+
>+PUT_VC1_MSPEL_MC_MSA(1, 1);
>+PUT_VC1_MSPEL_MC_MSA(1, 2);
>+PUT_VC1_MSPEL_MC_MSA(1, 3);
>+
>+PUT_VC1_MSPEL_MC_MSA(2, 1);
>+PUT_VC1_MSPEL_MC_MSA(2, 2);
>+PUT_VC1_MSPEL_MC_MSA(2, 3);
>+
>+PUT_VC1_MSPEL_MC_MSA(3, 1);
>+PUT_VC1_MSPEL_MC_MSA(3, 2);
>+PUT_VC1_MSPEL_MC_MSA(3, 3);
About the 'cnst_para*' used in put_vc1_mspel_mc_h_v_msa, maybe you can reference the usage of 'shift_value'.
It may reduce some if clause especially in 'ff_put_vc1_mspel_mc ## hmode ## vmode ## _16_msa'.
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