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50 lines
1.5 KiB
50 lines
1.5 KiB
/* |
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* TTA (The Lossless True Audio) data |
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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 AVCODEC_TTADATA_H |
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#define AVCODEC_TTADATA_H |
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#include "internal.h" |
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#define MAX_ORDER 16 |
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typedef struct TTAFilter { |
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int32_t shift, round, error; |
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int32_t qm[MAX_ORDER]; |
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int32_t dx[MAX_ORDER]; |
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int32_t dl[MAX_ORDER]; |
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} TTAFilter; |
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typedef struct TTARice { |
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uint32_t k0, k1, sum0, sum1; |
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} TTARice; |
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typedef struct TTAChannel { |
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int32_t predictor; |
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TTAFilter filter; |
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TTARice rice; |
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} TTAChannel; |
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extern const uint32_t ff_tta_shift_1[]; |
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extern const uint32_t * const ff_tta_shift_16; |
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extern const uint8_t ff_tta_filter_configs[]; |
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void ff_tta_rice_init(TTARice *c, uint32_t k0, uint32_t k1); |
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void ff_tta_filter_init(TTAFilter *c, int32_t shift); |
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#endif /* AVCODEC_TTADATA_H */
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