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49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
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* Copyright (c) 2001-2003 The FFmpeg project
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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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/**
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* @file
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* ADPCM encoder/decoder common header.
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*/
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#ifndef AVCODEC_ADPCM_H
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#define AVCODEC_ADPCM_H
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#include <stdint.h>
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typedef struct ADPCMChannelStatus {
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int predictor;
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int16_t step_index;
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int step;
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/* for encoding */
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int prev_sample;
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/* MS version */
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int sample1;
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int sample2;
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int coeff1;
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int coeff2;
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int idelta;
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} ADPCMChannelStatus;
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int16_t ff_adpcm_argo_expand_nibble(ADPCMChannelStatus *cs, int nibble, int shift, int flag);
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#endif /* AVCODEC_ADPCM_H */
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