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55 lines
1.7 KiB
55 lines
1.7 KiB
/* |
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* Copyright (c) 2006 Michael Benjamin |
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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 "../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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