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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 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/arm/asm.S" |
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function ff_get_pixels_armv6, export=1 |
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pld [r1, r2] |
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push {r4-r8, lr} |
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mov lr, #8 |
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1: |
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ldrd_post r4, r5, r1, r2 |
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subs lr, lr, #1 |
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uxtb16 r6, r4 |
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uxtb16 r4, r4, ror #8 |
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uxtb16 r12, r5 |
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uxtb16 r8, r5, ror #8 |
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pld [r1, r2] |
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pkhbt r5, r6, r4, lsl #16 |
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pkhtb r6, r4, r6, asr #16 |
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pkhbt r7, r12, r8, lsl #16 |
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pkhtb r12, r8, r12, asr #16 |
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stm r0!, {r5,r6,r7,r12} |
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bgt 1b |
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pop {r4-r8, pc} |
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endfunc |
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function ff_diff_pixels_armv6, export=1 |
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pld [r1, r3] |
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pld [r2, r3] |
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push {r4-r9, lr} |
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mov lr, #8 |
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1: |
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ldrd_post r4, r5, r1, r3 |
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ldrd_post r6, r7, r2, r3 |
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uxtb16 r8, r4 |
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uxtb16 r4, r4, ror #8 |
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uxtb16 r9, r6 |
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uxtb16 r6, r6, ror #8 |
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pld [r1, r3] |
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ssub16 r9, r8, r9 |
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ssub16 r6, r4, r6 |
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uxtb16 r8, r5 |
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uxtb16 r5, r5, ror #8 |
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pld [r2, r3] |
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pkhbt r4, r9, r6, lsl #16 |
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pkhtb r6, r6, r9, asr #16 |
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uxtb16 r9, r7 |
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uxtb16 r7, r7, ror #8 |
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ssub16 r9, r8, r9 |
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ssub16 r5, r5, r7 |
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subs lr, lr, #1 |
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pkhbt r8, r9, r5, lsl #16 |
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pkhtb r9, r5, r9, asr #16 |
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stm r0!, {r4,r6,r8,r9} |
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bgt 1b |
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pop {r4-r9, pc} |
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endfunc
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