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  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_idct_mmx(int16_t *block);
  53. void ff_simple_idct_add_mmx(uint8_t *dest, int line_size, int16_t *block);
  54. void ff_simple_idct_put_mmx(uint8_t *dest, int line_size, int16_t *block);
  55.  
  56. void ff_simple_idct248_put(uint8_t *dest, int line_size, int16_t *block);
  57.  
  58. void ff_simple_idct84_add(uint8_t *dest, int line_size, int16_t *block);
  59. void ff_simple_idct48_add(uint8_t *dest, int line_size, int16_t *block);
  60. void ff_simple_idct44_add(uint8_t *dest, int line_size, int16_t *block);
  61.  
  62. #endif /* AVCODEC_SIMPLE_IDCT_H */
  63.