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060e4a9e06
The typedefs also exist in the avfft.h header and since typedefs cannot be legally redefined in C, the code fails to compile with some compilers. This reverts commits11c7155cceand57f1b1dcc7.
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/*
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* (I)DCT Transforms
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* Copyright (c) 2009 Peter Ross <pross@xvid.org>
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* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
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* Copyright (c) 2010 Vitor Sessak
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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 St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_DCT_H
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#define AVCODEC_DCT_H
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#include <stdint.h>
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#include "rdft.h"
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struct DCTContext {
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int nbits;
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int inverse;
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RDFTContext rdft;
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const float *costab;
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FFTSample *csc2;
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void (*dct_calc)(struct DCTContext *s, FFTSample *data);
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void (*dct32)(FFTSample *out, const FFTSample *in);
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};
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/**
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* Set up DCT.
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* @param nbits size of the input array:
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* (1 << nbits) for DCT-II, DCT-III and DST-I
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* (1 << nbits) + 1 for DCT-I
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*
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* @note the first element of the input of DST-I is ignored
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*/
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int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType type);
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void ff_dct_end (DCTContext *s);
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void ff_dct_init_x86(DCTContext *s);
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void ff_fdct_ifast(int16_t *data);
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void ff_fdct_ifast248(int16_t *data);
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void ff_jpeg_fdct_islow_8(int16_t *data);
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void ff_jpeg_fdct_islow_10(int16_t *data);
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void ff_fdct248_islow_8(int16_t *data);
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void ff_fdct248_islow_10(int16_t *data);
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void ff_j_rev_dct(int16_t *data);
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#endif /* AVCODEC_DCT_H */
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