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Diffstat (limited to 'libavcodec/adpcm.h')
-rw-r--r-- | libavcodec/adpcm.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/libavcodec/adpcm.h b/libavcodec/adpcm.h new file mode 100644 index 0000000000..aed5048d4a --- /dev/null +++ b/libavcodec/adpcm.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2001-2003 The ffmpeg Project + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * ADPCM encoder/decoder common header. + */ + +#ifndef AVCODEC_ADPCM_H +#define AVCODEC_ADPCM_H + +#define BLKSIZE 1024 + +typedef struct ADPCMChannelStatus { + int predictor; + short int step_index; + int step; + /* for encoding */ + int prev_sample; + + /* MS version */ + short sample1; + short sample2; + int coeff1; + int coeff2; + int idelta; +} ADPCMChannelStatus; + +#endif /* AVCODEC_ADPCM_H */ |