/*
  * (I)DCT Transforms
  * Copyright (c) 2009 Peter Ross <pross@xvid.org>
  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
  * Copyright (c) 2010 Vitor Sessak
  *

  * This file is part of FFmpeg.

  *

  * FFmpeg is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *

  * FFmpeg is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 

 #if !defined(AVCODEC_DCT_H) && (!defined(FFT_FLOAT) || FFT_FLOAT)

 #define AVCODEC_DCT_H
 

 #include <stdint.h>
 

 #include "rdft.h"
 
 struct DCTContext {
     int nbits;
     int inverse;
     RDFTContext rdft;
     const float *costab;
     FFTSample *csc2;
     void (*dct_calc)(struct DCTContext *s, FFTSample *data);
     void (*dct32)(FFTSample *out, const FFTSample *in);
 };
 
 /**
  * Set up DCT.
  * @param nbits           size of the input array:
  *                        (1 << nbits)     for DCT-II, DCT-III and DST-I
  *                        (1 << nbits) + 1 for DCT-I
  *
  * @note the first element of the input of DST-I is ignored
  */
 int  ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType type);
 void ff_dct_end (DCTContext *s);
 

 void ff_dct_init_x86(DCTContext *s);

 void ff_fdct_ifast(int16_t *data);
 void ff_fdct_ifast248(int16_t *data);
 void ff_jpeg_fdct_islow_8(int16_t *data);
 void ff_jpeg_fdct_islow_10(int16_t *data);
 void ff_fdct248_islow_8(int16_t *data);
 void ff_fdct248_islow_10(int16_t *data);
 
 void ff_j_rev_dct(int16_t *data);

 void ff_j_rev_dct4(int16_t *data);
 void ff_j_rev_dct2(int16_t *data);
 void ff_j_rev_dct1(int16_t *data);

 void ff_jref_idct_put(uint8_t *dest, int line_size, int16_t *block);
 void ff_jref_idct_add(uint8_t *dest, int line_size, int16_t *block);

 #endif /* AVCODEC_DCT_H */