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015821229f
This way, the special IDCT permutations are no longer needed. This is similar to how H264 does it, and removes the dsputil dependency imposed by the scantable code. Also remove the unused type == 0 cases from the plain C version of the idct. Signed-off-by: Martin Storsjö <martin@martin.st>
66 lines
1.9 KiB
C
66 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 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 <string.h>
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#include "libavutil/attributes.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/vp3dsp.h"
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#include "libavcodec/dsputil.h"
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#include "dsputil_bfin.h"
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#include "vp3_bfin.h"
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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_cropTbl + 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_cropTbl + 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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