30f80d855b
Makes SIMD-optimized 8x8 and 16x16 idcts for 8 and 10 bit depth available on aarch64. For a UHD HDR (10 bit) sample video these were consuming the most time and this optimization reduced overall decode time from 19.4s to 16.4s, approximately 15% speedup. Test sample was the first 300 frames of "LG 4K HDR Demo - New York.ts", running on Apple M1. Signed-off-by: Josh Dekker <josh@itanimul.li>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
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* Copyright (c) 2020 Reimar Döffinger
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/aarch64/cpu.h"
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#include "libavcodec/hevcdsp.h"
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void ff_hevc_idct_8x8_8_neon(int16_t *coeffs, int col_limit);
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void ff_hevc_idct_8x8_10_neon(int16_t *coeffs, int col_limit);
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void ff_hevc_idct_16x16_8_neon(int16_t *coeffs, int col_limit);
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void ff_hevc_idct_16x16_10_neon(int16_t *coeffs, int col_limit);
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av_cold void ff_hevc_dsp_init_aarch64(HEVCDSPContext *c, const int bit_depth)
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{
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if (!have_neon(av_get_cpu_flags())) return;
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if (bit_depth == 8) {
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c->idct[1] = ff_hevc_idct_8x8_8_neon;
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c->idct[2] = ff_hevc_idct_16x16_8_neon;
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}
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if (bit_depth == 10) {
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c->idct[1] = ff_hevc_idct_8x8_10_neon;
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c->idct[2] = ff_hevc_idct_16x16_10_neon;
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}
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}
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