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54 lines
1.7 KiB
54 lines
1.7 KiB
18 years ago
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/*
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* Copyright (c) 2006 Michael Benjamin
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; 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 "../avcodec.h"
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#include "../dsputil.h"
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static int sad8x8_bfin( void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h )
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{
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int sum;
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__asm__ __volatile__ (
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"P0 = %1;" // blk1
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"P1 = %2;" // blk2
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"P2 = %3;\n" // h
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"I0 = P0;"
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"I1 = P1;\n"
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"A0 = 0;"
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"A1 = 0;\n"
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"M0 = P2;\n"
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"P3 = 32;\n"
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"LSETUP (sad8x8LoopBegin, sad8x8LoopEnd) LC0=P3;\n"
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"sad8x8LoopBegin:\n"
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" DISALGNEXCPT || R0 = [I0] || R2 = [I1];\n"
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" DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];\n"
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"sad8x8LoopEnd:\n"
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" SAA ( R1:0 , R3:2 );\n"
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"R3 = A1.L + A1.H, R2 = A0.L + A0.H;\n"
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"%0 = R2 + R3 (S);\n"
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: "=&d" (sum)
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: "m"(blk1), "m"(blk2), "m"(h)
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: "P0","P1","P2","I0","I1","A0","A1","R0","R1","R2","R3");
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return sum;
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}
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void dsputil_init_bfin( DSPContext* c, AVCodecContext *avctx )
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{
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c->pix_abs[1][0] = sad8x8_bfin;
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c->sad[1] = sad8x8_bfin;
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}
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