FFmpeg/libavcodec/simple_idct.h
James Almer 5a49097b42 Merge commit '2ec9fa5ec60dcd10e1cb10d8b4e4437e634ea428'
* commit '2ec9fa5ec60dcd10e1cb10d8b4e4437e634ea428':
  idct: Change type of array stride parameters to ptrdiff_t

Merged-by: James Almer <jamrial@gmail.com>
2017-03-21 14:29:52 -03:00

60 lines
2.1 KiB
C

/*
* Simple IDCT
*
* Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* simple idct header.
*/
#ifndef AVCODEC_SIMPLE_IDCT_H
#define AVCODEC_SIMPLE_IDCT_H
#include <stddef.h>
#include <stdint.h>
void ff_simple_idct_put_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_add_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_8(int16_t *block);
void ff_simple_idct_put_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_add_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_10(int16_t *block);
void ff_simple_idct_put_12(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_add_12(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct_12(int16_t *block);
/**
* Special version of ff_simple_idct_10() which does dequantization
* and scales by a factor of 2 more between the two IDCTs to account
* for larger scale of input coefficients.
*/
void ff_prores_idct(int16_t *block, const int16_t *qmat);
void ff_simple_idct248_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
#endif /* AVCODEC_SIMPLE_IDCT_H */