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de452e5037
This avoids SIMD-optimized functions having to sign-extend their line size argument manually to be able to do pointer arithmetic. Also adjust parameter names to be "stride" everywhere.
108 lines
3.1 KiB
NASM
108 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, ptrdiff_t stride)
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cglobal get_pixels, 3,4
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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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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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; ptrdiff_t stride);
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cglobal diff_pixels, 4,5
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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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