ffmpeg/libavcodec/simple_idct.h

   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 */