blob: 2a5e1d7f6dab83fc0b191f7930dac39e4adc4e8a
| 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 <stddef.h> |
| 32 | #include <stdint.h> |
| 33 | |
| 34 | void ff_simple_idct_put_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 35 | void ff_simple_idct_add_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 36 | void ff_simple_idct_8(int16_t *block); |
| 37 | |
| 38 | void ff_simple_idct_put_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 39 | void ff_simple_idct_add_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 40 | void ff_simple_idct_10(int16_t *block); |
| 41 | |
| 42 | void ff_simple_idct_put_12(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 43 | void ff_simple_idct_add_12(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 44 | void ff_simple_idct_12(int16_t *block); |
| 45 | |
| 46 | /** |
| 47 | * Special version of ff_simple_idct_10() which does dequantization |
| 48 | * and scales by a factor of 2 more between the two IDCTs to account |
| 49 | * for larger scale of input coefficients. |
| 50 | */ |
| 51 | void ff_prores_idct(int16_t *block, const int16_t *qmat); |
| 52 | |
| 53 | void ff_simple_idct248_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 54 | |
| 55 | void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 56 | void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 57 | void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block); |
| 58 | |
| 59 | #endif /* AVCODEC_SIMPLE_IDCT_H */ |
| 60 |