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48 lines
1.3 KiB
48 lines
1.3 KiB
/* |
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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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