| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * DCA ADPCM engine | ||
| 3 | * Copyright (C) 2017 Daniil Cherednik | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #ifndef AVCODEC_DCAADPCM_H | ||
| 23 | #define AVCODEC_DCAADPCM_H | ||
| 24 | |||
| 25 | #include "dcamath.h" | ||
| 26 | #include "dcadata.h" | ||
| 27 | #include "dcaenc.h" | ||
| 28 | |||
| 29 | typedef struct DCAADPCMEncContext { | ||
| 30 | void *private_data; | ||
| 31 | } DCAADPCMEncContext; | ||
| 32 | |||
| 33 | 392496 | static inline int64_t ff_dcaadpcm_predict(int pred_vq_index, const int32_t *input) | |
| 34 | { | ||
| 35 | int i; | ||
| 36 | 392496 | const int16_t *coeff = ff_dca_adpcm_vb[pred_vq_index]; | |
| 37 | 392496 | int64_t pred = 0; | |
| 38 |
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1962480 | for (i = 0; i < DCA_ADPCM_COEFFS; i++) |
| 39 | 1569984 | pred += (int64_t)input[DCA_ADPCM_COEFFS - 1 - i] * coeff[i]; | |
| 40 | |||
| 41 | 392496 | return clip23(norm13(pred)); | |
| 42 | } | ||
| 43 | |||
| 44 | int ff_dcaadpcm_subband_analysis(const DCAADPCMEncContext *s, const int32_t *input, int len, int *diff); | ||
| 45 | |||
| 46 | int ff_dcaadpcm_do_real(int pred_vq_index, | ||
| 47 | softfloat quant, int32_t scale_factor, int32_t step_size, | ||
| 48 | const int32_t *prev_hist, const int32_t *in, int32_t *next_hist, int32_t *out, | ||
| 49 | int len, int32_t peak); | ||
| 50 | |||
| 51 | av_cold int ff_dcaadpcm_init(DCAADPCMEncContext *s); | ||
| 52 | av_cold void ff_dcaadpcm_free(DCAADPCMEncContext *s); | ||
| 53 | |||
| 54 | #endif /* AVCODEC_DCAADPCM_H */ | ||
| 55 |