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hevc_dequant_4x4_8_c (GCC): 20.2 ( 1.00x) hevc_dequant_4x4_8_c (Clang): 21.7 ( 1.00x) hevc_dequant_4x4_8_ssse3: 5.8 ( 3.51x) hevc_dequant_8x8_8_c (GCC): 32.9 ( 1.00x) hevc_dequant_8x8_8_c (Clang): 78.7 ( 1.00x) hevc_dequant_8x8_8_ssse3: 6.8 ( 4.83x) hevc_dequant_16x16_8_c (GCC): 105.1 ( 1.00x) hevc_dequant_16x16_8_c (Clang): 151.1 ( 1.00x) hevc_dequant_16x16_8_ssse3: 19.3 ( 5.45x) hevc_dequant_32x32_8_c (GCC): 415.7 ( 1.00x) hevc_dequant_32x32_8_c (Clang): 602.3 ( 1.00x) hevc_dequant_32x32_8_ssse3: 78.2 ( 5.32x) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
60 lines
1.9 KiB
NASM
60 lines
1.9 KiB
NASM
;*****************************************************************************
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;* SSSE3-optimized HEVC dequant code
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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 "libavutil/x86/x86util.asm"
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SECTION .text
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INIT_XMM ssse3
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; void ff_hevc_dequant_8_ssse3(int16_t *coeffs, int16_t log2_size)
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cglobal hevc_dequant_8, 2, 3+UNIX64, 3
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; coeffs, log2_size (in ecx), tmp/size
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%if WIN64
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DECLARE_REG_TMP 1,0,2
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; r0 is the shift register (ecx) on win64
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xchg r0, r1
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%elif ARCH_X86_64
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DECLARE_REG_TMP 0,3,1
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; r3 is ecx
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mov t1d, r1d
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%else
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; r1 is ecx
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DECLARE_REG_TMP 0,1,2
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%endif
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mov t2d, 256
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shl t2d, t1b
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movd m0, t2d
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add t1d, t1d
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SPLATW m0, m0
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mov t2d, 1
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shl t2d, t1b
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.loop:
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mova m1, [t0]
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mova m2, [t0+mmsize]
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pmulhrsw m1, m0
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pmulhrsw m2, m0
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mova [t0], m1
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mova [t0+mmsize], m2
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add t0, 2*mmsize
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sub t2d, mmsize
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jg .loop
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RET
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