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ffmpeg / libavcodec / arm / dsputil_armv6.S @ 153f4957

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/*
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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 "asm.S"
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        .text
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function ff_add_pixels_clamped_armv6, export=1
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        push            {r4-r8,lr}
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        mov             r3,  #8
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1:
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        ldm             r0!, {r4,r5,r12,lr}
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        ldrd            r6,  r7,  [r1]
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        pkhbt           r8,  r4,  r5,  lsl #16
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        pkhtb           r5,  r5,  r4,  asr #16
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        pkhbt           r4,  r12, lr,  lsl #16
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        pkhtb           lr,  lr,  r12, asr #16
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        pld             [r1, r2]
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        uxtab16         r8,  r8,  r6
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        uxtab16         r5,  r5,  r6,  ror #8
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        uxtab16         r4,  r4,  r7
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        uxtab16         lr,  lr,  r7,  ror #8
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        usat16          r8,  #8,  r8
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        usat16          r5,  #8,  r5
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        usat16          r4,  #8,  r4
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        usat16          lr,  #8,  lr
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        orr             r6,  r8,  r5,  lsl #8
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        orr             r7,  r4,  lr,  lsl #8
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        subs            r3,  r3,  #1
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        strd            r6,  r7,  [r1],  r2
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        bgt             1b
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        pop             {r4-r8,pc}
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.endfunc