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76 lines
2.6 KiB
76 lines
2.6 KiB
/* |
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* Copyright (c) 2009 Mans Rullgard <mans@mansr.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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/arm/asm.S" |
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function ff_pix_norm1_armv6, export=1 |
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push {r4-r6, lr} |
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mov r12, #16 |
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mov lr, #0 |
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1: |
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ldm r0, {r2-r5} |
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uxtb16 r6, r2 |
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uxtb16 r2, r2, ror #8 |
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smlad lr, r6, r6, lr |
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uxtb16 r6, r3 |
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smlad lr, r2, r2, lr |
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uxtb16 r3, r3, ror #8 |
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smlad lr, r6, r6, lr |
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uxtb16 r6, r4 |
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smlad lr, r3, r3, lr |
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uxtb16 r4, r4, ror #8 |
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smlad lr, r6, r6, lr |
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uxtb16 r6, r5 |
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smlad lr, r4, r4, lr |
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uxtb16 r5, r5, ror #8 |
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smlad lr, r6, r6, lr |
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subs r12, r12, #1 |
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add r0, r0, r1 |
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smlad lr, r5, r5, lr |
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bgt 1b |
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mov r0, lr |
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pop {r4-r6, pc} |
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endfunc |
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function ff_pix_sum_armv6, export=1 |
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push {r4-r7, lr} |
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mov r12, #16 |
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mov r2, #0 |
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mov r3, #0 |
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mov lr, #0 |
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ldr r4, [r0] |
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1: |
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subs r12, r12, #1 |
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ldr r5, [r0, #4] |
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usada8 r2, r4, lr, r2 |
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ldr r6, [r0, #8] |
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usada8 r3, r5, lr, r3 |
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ldr r7, [r0, #12] |
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usada8 r2, r6, lr, r2 |
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beq 2f |
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ldr_pre r4, r0, r1 |
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usada8 r3, r7, lr, r3 |
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bgt 1b |
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2: |
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usada8 r3, r7, lr, r3 |
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add r0, r2, r3 |
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pop {r4-r7, pc} |
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endfunc
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