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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * TTA (The Lossless True Audio) data |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVCODEC_TTADATA_H |
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| 22 | #define AVCODEC_TTADATA_H |
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| 23 | |||
| 24 | #include "internal.h" |
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| 25 | |||
| 26 | #define MAX_ORDER 16 |
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| 27 | typedef struct TTAFilter { |
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| 28 | int32_t shift, round, error; |
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| 29 | int32_t qm[MAX_ORDER]; |
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| 30 | int32_t dx[MAX_ORDER]; |
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| 31 | int32_t dl[MAX_ORDER]; |
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| 32 | } TTAFilter; |
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| 33 | |||
| 34 | typedef struct TTARice { |
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| 35 | uint32_t k0, k1, sum0, sum1; |
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| 36 | } TTARice; |
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| 37 | |||
| 38 | typedef struct TTAChannel { |
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| 39 | int32_t predictor; |
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| 40 | TTAFilter filter; |
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| 41 | TTARice rice; |
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| 42 | } TTAChannel; |
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| 43 | |||
| 44 | extern const uint32_t ff_tta_shift_1[]; |
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| 45 | extern const uint32_t * const ff_tta_shift_16; |
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| 46 | extern const uint8_t ff_tta_filter_configs[]; |
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| 47 | |||
| 48 | void ff_tta_rice_init(TTARice *c, uint32_t k0, uint32_t k1); |
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| 49 | void ff_tta_filter_init(TTAFilter *c, int32_t shift); |
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| 50 | #endif /* AVCODEC_TTADATA_H */ |