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1 /*
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2 * Copyright (c) 2012
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3 * MIPS Technologies, Inc., California.
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4 *
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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7 * are met:
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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13 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
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14 * contributors may be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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16 *
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17 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
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18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 * SUCH DAMAGE.
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28 *
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29 * Author: Stanislav Ocovaj (socovaj@mips.com)
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30 *
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31 * This file is part of FFmpeg.
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32 *
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33 * FFmpeg is free software; you can redistribute it and/or
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34 * modify it under the terms of the GNU Lesser General Public
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35 * License as published by the Free Software Foundation; either
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36 * version 2.1 of the License, or (at your option) any later version.
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37 *
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38 * FFmpeg is distributed in the hope that it will be useful,
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39 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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41 * Lesser General Public License for more details.
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42 *
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43 * You should have received a copy of the GNU Lesser General Public
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44 * License along with FFmpeg; if not, write to the Free Software
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45 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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46 */
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47
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48 /**
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49 * @file
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50 * definitions and LUT table for MIPS FFT
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51 */
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52 #ifndef AVCODEC_MIPS_FFT_TABLE_H
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53 #define AVCODEC_MIPS_FFT_TABLE_H
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54
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55 #include "libavcodec/fft.h"
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56
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57 #define MAX_LOG2_NFFT 16 //!< Specifies maxiumum allowed fft size
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58 #define MAX_FFT_SIZE (1 << MAX_LOG2_NFFT)
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59
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60 extern uint16_t fft_offsets_lut[];
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61 void ff_fft_lut_init(uint16_t *table, int off, int size, int *index);
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62
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63 #endif /* AVCODEC_MIPS_FFT_TABLE_H */
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