67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
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* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.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 <stdint.h>
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#include <string.h>
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#include "libavutil/attributes.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/mathops.h"
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#include "libavcodec/vp3dsp.h"
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void ff_bfin_vp3_idct(int16_t *block);
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/* Intra iDCT offset 128 */
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static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block)
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{
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const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP + 128;
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int i,j;
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ff_bfin_vp3_idct (block);
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for (i=0;i<8;i++)
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for (j=0;j<8;j++)
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dest[line_size*i + j] = cm[block[j*8 + i]];
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memset(block, 0, 128);
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}
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/* Inter iDCT */
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static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block)
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{
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const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
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int i, j;
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ff_bfin_vp3_idct (block);
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for (i = 0; i < 8; i++)
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for (j = 0; j < 8; j++)
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dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]];
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memset(block, 0, 128);
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}
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av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
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{
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if (!(flags & CODEC_FLAG_BITEXACT)) {
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c->idct_add = bfin_vp3_idct_add;
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c->idct_put = bfin_vp3_idct_put;
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}
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}
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