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f222eb2b08
SpacemiT X60: dct_unquantize_h263_inter_c: 417.8 ( 1.00x) dct_unquantize_h263_inter_rvv_i32: 66.0 ( 6.33x) dct_unquantize_h263_intra_c: 140.2 ( 1.00x) dct_unquantize_h263_intra_rvv_i32: 67.7 ( 2.07x) Note that the C benchmarks are not stable, depending heavily on the number of coefficients picked by the RNG. The R-V V benchmarks are however very stable and generally better than C's.
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
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* Copyright © 2022 Rémi Denis-Courmont.
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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 "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavcodec/mpegvideo.h"
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#include "libavcodec/mpegvideo_unquantize.h"
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void ff_h263_dct_unquantize_intra_rvv(const MPVContext *s, int16_t *block,
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ptrdiff_t len, int qscale, int aic);
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void ff_h263_dct_unquantize_inter_rvv(const MPVContext *s, int16_t *block,
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ptrdiff_t len, int qscale);
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static void dct_unquantize_h263_intra_rvv(const MPVContext *s,
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int16_t *block, int n, int qscale)
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{
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if (!s->h263_aic)
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block[0] *= (n < 4) ? s->y_dc_scale : s->c_dc_scale;
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n = s->ac_pred ? 63
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: s->intra_scantable.raster_end[s->block_last_index[n]];
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ff_h263_dct_unquantize_intra_rvv(s, block, n, qscale, s->h263_aic);
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}
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static void dct_unquantize_h263_inter_rvv(const MPVContext *s,
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int16_t *block, int n, int qscale)
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{
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n = s->inter_scantable.raster_end[s->block_last_index[n]];
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ff_h263_dct_unquantize_inter_rvv(s, block, n, qscale);
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}
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av_cold
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void ff_mpv_unquantize_init_riscv(MPVUnquantDSPContext *c, int bitexact)
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{
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#if HAVE_RVV
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int flags = av_get_cpu_flags();
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if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB)) {
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c->dct_unquantize_h263_intra = dct_unquantize_h263_intra_rvv;
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c->dct_unquantize_h263_inter = dct_unquantize_h263_inter_rvv;
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}
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#endif
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}
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