mirror of https://git.videolan.org/git/ffmpeg.git
84 lines
2.5 KiB
NASM
84 lines
2.5 KiB
NASM
;*****************************************************************************
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;* SIMD-optimized pixel operations
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;*****************************************************************************
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;* Copyright (c) 2000, 2001 Fabrice Bellard
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;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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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 sse2
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cglobal get_pixels, 3, 4, 5
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lea r3, [r2*3]
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pxor m4, m4
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movh m0, [r1]
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movh m1, [r1+r2]
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movh m2, [r1+r2*2]
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movh m3, [r1+r3]
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lea r1, [r1+r2*4]
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punpcklbw m0, m4
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punpcklbw m1, m4
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punpcklbw m2, m4
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punpcklbw m3, m4
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mova [r0], m0
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mova [r0+0x10], m1
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mova [r0+0x20], m2
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mova [r0+0x30], m3
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movh m0, [r1]
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movh m1, [r1+r2*1]
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movh m2, [r1+r2*2]
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movh m3, [r1+r3]
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punpcklbw m0, m4
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punpcklbw m1, m4
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punpcklbw m2, m4
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punpcklbw m3, m4
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mova [r0+0x40], m0
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mova [r0+0x50], m1
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mova [r0+0x60], m2
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mova [r0+0x70], m3
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RET
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; void ff_diff_pixels(int16_t *block, const uint8_t *s1, const uint8_t *s2,
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; ptrdiff_t stride);
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INIT_XMM sse2
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cglobal diff_pixels, 4,5,5
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pxor m4, m4
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add r0, 128
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mov r4, -128
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.loop:
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movq m0, [r1]
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movq m2, [r2]
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movq m1, [r1+r3]
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movq m3, [r2+r3]
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punpcklbw m0, m4
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punpcklbw m1, m4
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punpcklbw m2, m4
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punpcklbw m3, m4
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psubw m0, m2
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psubw m1, m3
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mova [r0+r4+0], m0
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mova [r0+r4+mmsize], m1
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lea r1, [r1+r3*2]
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lea r2, [r2+r3*2]
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add r4, 2 * mmsize
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jne .loop
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RET
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