mirror of
https://github.com/FFmpeg/FFmpeg.git
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111 lines
3.1 KiB
NASM
111 lines
3.1 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 Libav.
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;*
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;* Libav 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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;* Libav 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 Libav; 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_MMX mmx
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; void ff_get_pixels_mmx(int16_t *block, const uint8_t *pixels, int line_size)
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cglobal get_pixels, 3,4
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movsxdifnidn r2, r2d
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add r0, 128
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mov r3, -128
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pxor m7, m7
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.loop:
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mova m0, [r1]
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mova m2, [r1+r2]
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mova m1, m0
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mova m3, m2
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punpcklbw m0, m7
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punpckhbw m1, m7
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punpcklbw m2, m7
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punpckhbw m3, m7
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mova [r0+r3+ 0], m0
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mova [r0+r3+ 8], m1
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mova [r0+r3+16], m2
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mova [r0+r3+24], m3
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lea r1, [r1+r2*2]
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add r3, 32
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js .loop
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REP_RET
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INIT_XMM sse2
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cglobal get_pixels, 3, 4
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movsxdifnidn r2, r2d
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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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INIT_MMX mmx
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; void ff_diff_pixels_mmx(int16_t *block, const uint8_t *s1, const uint8_t *s2,
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; int stride);
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cglobal diff_pixels, 4,5
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movsxdifnidn r3, r3d
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pxor m7, m7
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add r0, 128
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mov r4, -128
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.loop:
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mova m0, [r1]
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mova m2, [r2]
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mova m1, m0
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mova m3, m2
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punpcklbw m0, m7
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punpckhbw m1, m7
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punpcklbw m2, m7
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punpckhbw m3, m7
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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+8], m1
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add r1, r3
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add r2, r3
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add r4, 16
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jne .loop
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REP_RET
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