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
|
/*
* Simple IDCT
*
* Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* simple idct header.
*/
#ifndef AVCODEC_SIMPLE_IDCT_H
#define AVCODEC_SIMPLE_IDCT_H
#include <stddef.h>
#include <stdint.h>
void ff_simple_idct_put_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_add_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_8(int16_t *block);
void ff_simple_idct_put_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_add_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_10(int16_t *block);
/**
* Special version of ff_simple_idct_10() which does dequantization
* and scales by a factor of 2 more between the two IDCTs to account
* for larger scale of input coefficients.
*/
void ff_prores_idct(int16_t *block, const int16_t *qmat);
void ff_simple_idct248_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
#endif /* AVCODEC_SIMPLE_IDCT_H */
|
