FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
simple_idct.h
Go to the documentation of this file.
1 /*
2  * Simple IDCT
3  *
4  * Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * simple idct header.
26  */
27 
28 #ifndef AVCODEC_SIMPLE_IDCT_H
29 #define AVCODEC_SIMPLE_IDCT_H
30 
31 #include <stdint.h>
32 
33 void ff_simple_idct_put_8(uint8_t *dest, int line_size, int16_t *block);
34 void ff_simple_idct_add_8(uint8_t *dest, int line_size, int16_t *block);
35 void ff_simple_idct_8(int16_t *block);
36 
37 void ff_simple_idct_put_10(uint8_t *dest, int line_size, int16_t *block);
38 void ff_simple_idct_add_10(uint8_t *dest, int line_size, int16_t *block);
39 void ff_simple_idct_10(int16_t *block);
40 
41 void ff_simple_idct_put_12(uint8_t *dest, int line_size, int16_t *block);
42 void ff_simple_idct_add_12(uint8_t *dest, int line_size, int16_t *block);
43 void ff_simple_idct_12(int16_t *block);
44 
45 /**
46  * Special version of ff_simple_idct_10() which does dequantization
47  * and scales by a factor of 2 more between the two IDCTs to account
48  * for larger scale of input coefficients.
49  */
50 void ff_prores_idct(int16_t *block, const int16_t *qmat);
51 
52 void ff_simple_idct248_put(uint8_t *dest, int line_size, int16_t *block);
53 
54 void ff_simple_idct84_add(uint8_t *dest, int line_size, int16_t *block);
55 void ff_simple_idct48_add(uint8_t *dest, int line_size, int16_t *block);
56 void ff_simple_idct44_add(uint8_t *dest, int line_size, int16_t *block);
57 
58 #endif /* AVCODEC_SIMPLE_IDCT_H */