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  1. /*
  2.  * Copyright (c) 2012 Mans Rullgard
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #ifndef LIBAVCODEC_AACPSDSP_H
  22. #define LIBAVCODEC_AACPSDSP_H
  23.  
  24. #define PS_QMF_TIME_SLOTS 32
  25. #define PS_AP_LINKS 3
  26. #define PS_MAX_AP_DELAY 5
  27.  
  28. typedef struct PSDSPContext {
  29.     void (*add_squares)(float *dst, const float (*src)[2], int n);
  30.     void (*mul_pair_single)(float (*dst)[2], float (*src0)[2], float *src1,
  31.                             int n);
  32.     void (*hybrid_analysis)(float (*out)[2], float (*in)[2],
  33.                             const float (*filter)[8][2],
  34.                             int stride, int n);
  35.     void (*hybrid_analysis_ileave)(float (*out)[32][2], float L[2][38][64],
  36.                                    int i, int len);
  37.     void (*hybrid_synthesis_deint)(float out[2][38][64], float (*in)[32][2],
  38.                                    int i, int len);
  39.     void (*decorrelate)(float (*out)[2], float (*delay)[2],
  40.                         float (*ap_delay)[PS_QMF_TIME_SLOTS+PS_MAX_AP_DELAY][2],
  41.                         const float phi_fract[2], float (*Q_fract)[2],
  42.                         const float *transient_gain,
  43.                         float g_decay_slope,
  44.                         int len);
  45.     void (*stereo_interpolate[2])(float (*l)[2], float (*r)[2],
  46.                                   float h[2][4], float h_step[2][4],
  47.                                   int len);
  48. } PSDSPContext;
  49.  
  50. void ff_psdsp_init(PSDSPContext *s);
  51. void ff_psdsp_init_arm(PSDSPContext *s);
  52. void ff_psdsp_init_mips(PSDSPContext *s);
  53.  
  54. #endif /* LIBAVCODEC_AACPSDSP_H */
  55.