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- ;*****************************************************************************
- ;* SIMD-optimized MPEG encoding functions
- ;*****************************************************************************
- ;* 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
- ; int ff_pix_sum16_mmx(uint8_t *pix, int line_size)
- cglobal pix_sum16, 2, 3
- movsxdifnidn r1, r1d
- mov r2, r1
- neg r2
- shl r2, 4
- sub r0, r2
- pxor m7, m7
- pxor m6, m6
- .loop:
- mova m0, [r0+r2+0]
- mova m1, [r0+r2+0]
- mova m2, [r0+r2+8]
- mova m3, [r0+r2+8]
- punpcklbw m0, m7
- punpckhbw m1, m7
- punpcklbw m2, m7
- punpckhbw m3, m7
- paddw m1, m0
- paddw m3, m2
- paddw m3, m1
- paddw m6, m3
- add r2, r1
- js .loop
- mova m5, m6
- psrlq m6, 32
- paddw m6, m5
- mova m5, m6
- psrlq m6, 16
- paddw m6, m5
- movd eax, m6
- and eax, 0xffff
- RET
-
- INIT_MMX mmx
- ; int ff_pix_norm1_mmx(uint8_t *pix, int line_size)
- cglobal pix_norm1, 2, 4
- movsxdifnidn r1, r1d
- mov r2, 16
- pxor m0, m0
- pxor m7, m7
- .loop:
- mova m2, [r0+0]
- mova m3, [r0+8]
- mova m1, m2
- punpckhbw m1, m0
- punpcklbw m2, m0
- mova m4, m3
- punpckhbw m3, m0
- punpcklbw m4, m0
- pmaddwd m1, m1
- pmaddwd m2, m2
- pmaddwd m3, m3
- pmaddwd m4, m4
- paddd m2, m1
- paddd m4, m3
- paddd m7, m2
- add r0, r1
- paddd m7, m4
- dec r2
- jne .loop
- mova m1, m7
- psrlq m7, 32
- paddd m1, m7
- movd eax, m1
- RET
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