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https://gitee.com/openharmony/third_party_ffmpeg
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55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/*
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* Simple IDCT
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*
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* Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* simple idct header.
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*/
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#ifndef AVCODEC_SIMPLE_IDCT_H
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#define AVCODEC_SIMPLE_IDCT_H
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#include <stddef.h>
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#include <stdint.h>
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void ff_simple_idct_put_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct_add_8(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct_8(int16_t *block);
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void ff_simple_idct_put_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct_add_10(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct_10(int16_t *block);
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/**
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* Special version of ff_simple_idct_10() which does dequantization
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* and scales by a factor of 2 more between the two IDCTs to account
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* for larger scale of input coefficients.
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*/
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void ff_prores_idct(int16_t *block, const int16_t *qmat);
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void ff_simple_idct248_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
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#endif /* AVCODEC_SIMPLE_IDCT_H */
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