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ffmpeg/libavcodec/mips/h264_deblock_msa.c
gxw 6458c6bdb4 avcodec/mips: Optimize function ff_h264_loop_filter_strength_msa. 
Speed of decoding H264 1080P: 5.05x ==> 5.13x

Signed-off-by: Shiyou Yin <yinshiyou-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2021-05-07 17:53:23 +02:00

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/*
* MIPS SIMD optimized H.264 deblocking code
*
* Copyright (c) 2020 Loongson Technology Corporation Limited
* Gu Xiwei <guxiwei-hf@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 "libavcodec/bit_depth_template.c"
#include "h264dsp_mips.h"
#include "libavutil/mips/generic_macros_msa.h"
#include "libavcodec/mips/h264dsp_mips.h"
#define h264_loop_filter_strength_iteration_msa(edges, step, mask_mv, dir, \
d_idx, mask_dir) \
do { \
int b_idx = 0; \
int step_x4 = step << 2; \
int d_idx_12 = d_idx + 12; \
int d_idx_52 = d_idx + 52; \
int d_idx_x4 = d_idx << 2; \
int d_idx_x4_48 = d_idx_x4 + 48; \
int dir_x32 = dir * 32; \
uint8_t *ref_t = (uint8_t*)ref; \
uint8_t *mv_t = (uint8_t*)mv; \
uint8_t *nnz_t = (uint8_t*)nnz; \
uint8_t *bS_t = (uint8_t*)bS; \
mask_mv <<= 3; \
for (; b_idx < edges; b_idx += step) { \
out &= mask_dir; \
if (!(mask_mv & b_idx)) { \
if (bidir) { \
ref_2 = LD_SB(ref_t + d_idx_12); \
ref_3 = LD_SB(ref_t + d_idx_52); \
ref_0 = LD_SB(ref_t + 12); \
ref_1 = LD_SB(ref_t + 52); \
ref_2 = (v16i8)__msa_ilvr_w((v4i32)ref_3, (v4i32)ref_2); \
ref_0 = (v16i8)__msa_ilvr_w((v4i32)ref_0, (v4i32)ref_0); \
ref_1 = (v16i8)__msa_ilvr_w((v4i32)ref_1, (v4i32)ref_1); \
ref_3 = (v16i8)__msa_shf_h((v8i16)ref_2, 0x4e); \
ref_0 -= ref_2; \
ref_1 -= ref_3; \
ref_0 = (v16i8)__msa_or_v((v16u8)ref_0, (v16u8)ref_1); \
\
tmp_2 = LD_SH(mv_t + d_idx_x4_48); \
tmp_3 = LD_SH(mv_t + 48); \
tmp_4 = LD_SH(mv_t + 208); \
tmp_5 = tmp_2 - tmp_3; \
tmp_6 = tmp_2 - tmp_4; \
SAT_SH2_SH(tmp_5, tmp_6, 7); \
tmp_0 = __msa_pckev_b((v16i8)tmp_6, (v16i8)tmp_5); \
tmp_0 += cnst_1; \
tmp_0 = (v16i8)__msa_subs_u_b((v16u8)tmp_0, (v16u8)cnst_0);\
tmp_0 = (v16i8)__msa_sat_s_h((v8i16)tmp_0, 7); \
tmp_0 = __msa_pckev_b(tmp_0, tmp_0); \
out = (v16i8)__msa_or_v((v16u8)ref_0, (v16u8)tmp_0); \
\
tmp_2 = LD_SH(mv_t + 208 + d_idx_x4); \
tmp_5 = tmp_2 - tmp_3; \
tmp_6 = tmp_2 - tmp_4; \
SAT_SH2_SH(tmp_5, tmp_6, 7); \
tmp_1 = __msa_pckev_b((v16i8)tmp_6, (v16i8)tmp_5); \
tmp_1 += cnst_1; \
tmp_1 = (v16i8)__msa_subs_u_b((v16u8)tmp_1, (v16u8)cnst_0); \
tmp_1 = (v16i8)__msa_sat_s_h((v8i16)tmp_1, 7); \
tmp_1 = __msa_pckev_b(tmp_1, tmp_1); \
\
tmp_1 = (v16i8)__msa_shf_h((v8i16)tmp_1, 0x4e); \
out = (v16i8)__msa_or_v((v16u8)out, (v16u8)tmp_1); \
tmp_0 = (v16i8)__msa_shf_h((v8i16)out, 0x4e); \
out = (v16i8)__msa_min_u_b((v16u8)out, (v16u8)tmp_0); \
} else { \
ref_0 = LD_SB(ref_t + d_idx_12); \
ref_3 = LD_SB(ref_t + 12); \
tmp_2 = LD_SH(mv_t + d_idx_x4_48); \
tmp_3 = LD_SH(mv_t + 48); \
tmp_4 = tmp_3 - tmp_2; \
tmp_1 = (v16i8)__msa_sat_s_h(tmp_4, 7); \
tmp_1 = __msa_pckev_b(tmp_1, tmp_1); \
tmp_1 += cnst_1; \
out = (v16i8)__msa_subs_u_b((v16u8)tmp_1, (v16u8)cnst_0); \
out = (v16i8)__msa_sat_s_h((v8i16)out, 7); \
out = __msa_pckev_b(out, out); \
ref_0 = ref_3 - ref_0; \
out = (v16i8)__msa_or_v((v16u8)out, (v16u8)ref_0); \
} \
} \
tmp_0 = LD_SB(nnz_t + 12); \
tmp_1 = LD_SB(nnz_t + d_idx_12); \
tmp_0 = (v16i8)__msa_or_v((v16u8)tmp_0, (v16u8)tmp_1); \
tmp_0 = (v16i8)__msa_min_u_b((v16u8)tmp_0, (v16u8)cnst_2); \
out = (v16i8)__msa_min_u_b((v16u8)out, (v16u8)cnst_2); \
tmp_0 = (v16i8)((v8i16)tmp_0 << 1); \
tmp_0 = (v16i8)__msa_max_u_b((v16u8)out, (v16u8)tmp_0); \
tmp_0 = __msa_ilvr_b(zero, tmp_0); \
ST_D1(tmp_0, 0, bS_t + dir_x32); \
ref_t += step; \
mv_t += step_x4; \
nnz_t += step; \
bS_t += step; \
} \
} while(0)
void ff_h264_loop_filter_strength_msa(int16_t bS[2][4][4], uint8_t nnz[40],
int8_t ref[2][40], int16_t mv[2][40][2],
int bidir, int edges, int step,
int mask_mv0, int mask_mv1, int field)
{
v16i8 out;
v16i8 ref_0, ref_1, ref_2, ref_3;
v16i8 tmp_0, tmp_1;
v8i16 tmp_2, tmp_3, tmp_4, tmp_5, tmp_6;
v16i8 cnst_0, cnst_1, cnst_2;
v16i8 zero = { 0 };
v16i8 one = __msa_fill_b(0xff);
if (field) {
cnst_0 = (v16i8)__msa_fill_h(0x206);
cnst_1 = (v16i8)__msa_fill_h(0x103);
cnst_2 = (v16i8)__msa_fill_h(0x101);
} else {
cnst_0 = __msa_fill_b(0x6);
cnst_1 = __msa_fill_b(0x3);
cnst_2 = __msa_fill_b(0x1);
}
step <<= 3;
edges <<= 3;
h264_loop_filter_strength_iteration_msa(edges, step, mask_mv1, 1, -8, zero);
h264_loop_filter_strength_iteration_msa(32, 8, mask_mv0, 0, -1, one);
LD_SB2((int8_t*)bS, 16, tmp_0, tmp_1);
tmp_2 = (v8i16)__msa_ilvl_d((v2i64)tmp_0, (v2i64)tmp_0);
tmp_3 = (v8i16)__msa_ilvl_d((v2i64)tmp_1, (v2i64)tmp_1);
TRANSPOSE4x4_SH_SH(tmp_0, tmp_2, tmp_1, tmp_3, tmp_2, tmp_3, tmp_4, tmp_5);
tmp_0 = (v16i8)__msa_ilvr_d((v2i64)tmp_3, (v2i64)tmp_2);
tmp_1 = (v16i8)__msa_ilvr_d((v2i64)tmp_5, (v2i64)tmp_4);
ST_SB2(tmp_0, tmp_1, (int8_t*)bS, 16);
}
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