1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include <string.h>
#include "libavutil/attributes.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/mathops.h"
#include "libavcodec/vp3dsp.h"
void ff_bfin_vp3_idct(int16_t *block);
/* Intra iDCT offset 128 */
static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block)
{
const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP + 128;
int i,j;
ff_bfin_vp3_idct (block);
for (i=0;i<8;i++)
for (j=0;j<8;j++)
dest[line_size*i + j] = cm[block[j*8 + i]];
memset(block, 0, 128);
}
/* Inter iDCT */
static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block)
{
const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
int i, j;
ff_bfin_vp3_idct (block);
for (i = 0; i < 8; i++)
for (j = 0; j < 8; j++)
dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]];
memset(block, 0, 128);
}
av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
{
if (!(flags & CODEC_FLAG_BITEXACT)) {
c->idct_add = bfin_vp3_idct_add;
c->idct_put = bfin_vp3_idct_put;
}
}
|
