ffmpeg/libavcodec/aacpsdsp.h

   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], const 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 */