| /* |
| * TTA (The Lossless True Audio) data |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVCODEC_TTADATA_H |
| #define AVCODEC_TTADATA_H |
| |
| #include "internal.h" |
| |
| #define MAX_ORDER 16 |
| typedef struct TTAFilter { |
| int32_t shift, round, error; |
| int32_t qm[MAX_ORDER]; |
| int32_t dx[MAX_ORDER]; |
| int32_t dl[MAX_ORDER]; |
| } TTAFilter; |
| |
| typedef struct TTARice { |
| uint32_t k0, k1, sum0, sum1; |
| } TTARice; |
| |
| typedef struct TTAChannel { |
| int32_t predictor; |
| TTAFilter filter; |
| TTARice rice; |
| } TTAChannel; |
| |
| extern const uint32_t ff_tta_shift_1[]; |
| extern const uint32_t * const ff_tta_shift_16; |
| extern const uint8_t ff_tta_filter_configs[]; |
| |
| void ff_tta_rice_init(TTARice *c, uint32_t k0, uint32_t k1); |
| void ff_tta_filter_init(TTAFilter *c, int32_t shift); |
| #endif /* AVCODEC_TTADATA_H */ |
