2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/attributes.h"
25 #include "libavcodec/avcodec.h"
26 #include "libavcodec/mathops.h"
27 #include "libavcodec/vp3dsp.h"
29 void ff_bfin_vp3_idct(int16_t *block);
31 /* Intra iDCT offset 128 */
32 static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block)
34 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP + 128;
37 ff_bfin_vp3_idct (block);
41 dest[line_size*i + j] = cm[block[j*8 + i]];
43 memset(block, 0, 128);
47 static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block)
49 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
52 ff_bfin_vp3_idct (block);
53 for (i = 0; i < 8; i++)
54 for (j = 0; j < 8; j++)
55 dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]];
57 memset(block, 0, 128);
60 av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
62 if (!(flags & CODEC_FLAG_BITEXACT)) {
63 c->idct_add = bfin_vp3_idct_add;
64 c->idct_put = bfin_vp3_idct_put;