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