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53 lines
1.3 KiB
53 lines
1.3 KiB
17 years ago
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/*
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* G.729 decoder
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* Copyright (c) 2008 Vladimir Voroshilov
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#ifndef FFMPEG_G729_H
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#define FFMPEG_G729_H
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#include <stdint.h>
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/// Moving Average (MA) prediction order
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#define MA_NP 4
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/**
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* minimum quantized LSF value (3.2.4)
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* 0.005 in Q13
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*/
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#define LSFQ_MIN 40
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/**
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* maximum quantized LSF value (3.2.4)
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* 3.135 in Q13
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*/
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#define LSFQ_MAX 25681
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/**
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* minimum LSF distance (3.2.4)
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* 0.0391 in Q13
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*/
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#define LSFQ_DIFF_MIN 321
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/**
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* maximum possible subframe size
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*/
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#define MAX_SUBFRAME_SIZE 44
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#endif // FFMPEG_G729_H
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