simple_idct.h (2572B)
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_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 35 void ff_simple_idct_add_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 36 void ff_simple_idct_int16_8bit(int16_t *block); 37 38 void ff_simple_idct_put_int16_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 39 void ff_simple_idct_add_int16_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 40 void ff_simple_idct_int16_10bit(int16_t *block); 41 42 void ff_simple_idct_put_int32_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 43 void ff_simple_idct_add_int32_10bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 44 void ff_simple_idct_int32_10bit(int16_t *block); 45 46 void ff_simple_idct_put_int16_12bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 47 void ff_simple_idct_add_int16_12bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 48 void ff_simple_idct_int16_12bit(int16_t *block); 49 50 /** 51 * Special version of ff_simple_idct_int16_10bit() which does dequantization 52 * and scales by a factor of 2 more between the two IDCTs to account 53 * for larger scale of input coefficients. 54 */ 55 void ff_prores_idct_10(int16_t *block, const int16_t *qmat); 56 void ff_prores_idct_12(int16_t *block, const int16_t *qmat); 57 58 void ff_simple_idct248_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 59 60 void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 61 void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 62 void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block); 63 64 #endif /* AVCODEC_SIMPLE_IDCT_H */