mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-26 01:02:33 +00:00
5a49097b42
* commit '2ec9fa5ec60dcd10e1cb10d8b4e4437e634ea428': idct: Change type of array stride parameters to ptrdiff_t Merged-by: James Almer <jamrial@gmail.com>
60 lines
2.1 KiB
C
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 */
|