4 * Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
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.
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.
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
28 #ifndef AVCODEC_SIMPLE_IDCT_H
29 #define AVCODEC_SIMPLE_IDCT_H
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
);
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
);
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
);
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.
50 void ff_prores_idct(int16_t *block
, const int16_t *qmat
);
52 void ff_simple_idct248_put(uint8_t *dest
, int line_size
, int16_t *block
);
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
);
58 #endif /* AVCODEC_SIMPLE_IDCT_H */