LCOV - code coverage report
Current view: top level - libavcodec - dcaadpcm.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 6 6 100.0 %
Date: 2017-12-12 11:08:38 Functions: 1 1 100.0 %

          Line data    Source code
       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     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 */

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