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- ;*****************************************************************************
- ;* SIMD-optimized pixel operations
- ;*****************************************************************************
- ;* Copyright (c) 2000, 2001 Fabrice Bellard
- ;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
- ;*
- ;* This file is part of Libav.
- ;*
- ;* Libav is free software; you can redistribute it and/or
- ;* modify it under the terms of the GNU Lesser General Public
- ;* License as published by the Free Software Foundation; either
- ;* version 2.1 of the License, or (at your option) any later version.
- ;*
- ;* Libav is distributed in the hope that it will be useful,
- ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ;* Lesser General Public License for more details.
- ;*
- ;* You should have received a copy of the GNU Lesser General Public
- ;* License along with Libav; if not, write to the Free Software
- ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- ;*****************************************************************************
-
- %include "libavutil/x86/x86util.asm"
-
- SECTION .text
-
- INIT_MMX mmx
- ; void ff_get_pixels_mmx(int16_t *block, const uint8_t *pixels, ptrdiff_t stride)
- cglobal get_pixels, 3,4
- add r0, 128
- mov r3, -128
- pxor m7, m7
- .loop:
- mova m0, [r1]
- mova m2, [r1+r2]
- mova m1, m0
- mova m3, m2
- punpcklbw m0, m7
- punpckhbw m1, m7
- punpcklbw m2, m7
- punpckhbw m3, m7
- mova [r0+r3+ 0], m0
- mova [r0+r3+ 8], m1
- mova [r0+r3+16], m2
- mova [r0+r3+24], m3
- lea r1, [r1+r2*2]
- add r3, 32
- js .loop
- REP_RET
-
- INIT_XMM sse2
- cglobal get_pixels, 3, 4
- lea r3, [r2*3]
- pxor m4, m4
- movh m0, [r1]
- movh m1, [r1+r2]
- movh m2, [r1+r2*2]
- movh m3, [r1+r3]
- lea r1, [r1+r2*4]
- punpcklbw m0, m4
- punpcklbw m1, m4
- punpcklbw m2, m4
- punpcklbw m3, m4
- mova [r0], m0
- mova [r0+0x10], m1
- mova [r0+0x20], m2
- mova [r0+0x30], m3
- movh m0, [r1]
- movh m1, [r1+r2*1]
- movh m2, [r1+r2*2]
- movh m3, [r1+r3]
- punpcklbw m0, m4
- punpcklbw m1, m4
- punpcklbw m2, m4
- punpcklbw m3, m4
- mova [r0+0x40], m0
- mova [r0+0x50], m1
- mova [r0+0x60], m2
- mova [r0+0x70], m3
- RET
-
- INIT_MMX mmx
- ; void ff_diff_pixels_mmx(int16_t *block, const uint8_t *s1, const uint8_t *s2,
- ; ptrdiff_t stride);
- cglobal diff_pixels, 4,5
- pxor m7, m7
- add r0, 128
- mov r4, -128
- .loop:
- mova m0, [r1]
- mova m2, [r2]
- mova m1, m0
- mova m3, m2
- punpcklbw m0, m7
- punpckhbw m1, m7
- punpcklbw m2, m7
- punpckhbw m3, m7
- psubw m0, m2
- psubw m1, m3
- mova [r0+r4+0], m0
- mova [r0+r4+8], m1
- add r1, r3
- add r2, r3
- add r4, 16
- jne .loop
- REP_RET
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