libavcodec/aacpsdsp.h
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 /*
  * Copyright (c) 2012 Mans Rullgard
  *
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  * This file is part of FFmpeg.
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  *
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  * FFmpeg is free software; you can redistribute it and/or
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  * 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.
  *
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  * FFmpeg is distributed in the hope that it will be useful,
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  * 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
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  * License along with FFmpeg; if not, write to the Free Software
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  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef LIBAVCODEC_AACPSDSP_H
 #define LIBAVCODEC_AACPSDSP_H
 
 #define PS_QMF_TIME_SLOTS 32
 #define PS_AP_LINKS 3
 #define PS_MAX_AP_DELAY 5
 
 typedef struct PSDSPContext {
     void (*add_squares)(float *dst, const float (*src)[2], int n);
     void (*mul_pair_single)(float (*dst)[2], float (*src0)[2], float *src1,
                             int n);
     void (*hybrid_analysis)(float (*out)[2], float (*in)[2],
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                             const float (*filter)[8][2],
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                             int stride, int n);
     void (*hybrid_analysis_ileave)(float (*out)[32][2], float L[2][38][64],
                                    int i, int len);
     void (*hybrid_synthesis_deint)(float out[2][38][64], float (*in)[32][2],
                                    int i, int len);
     void (*decorrelate)(float (*out)[2], float (*delay)[2],
                         float (*ap_delay)[PS_QMF_TIME_SLOTS+PS_MAX_AP_DELAY][2],
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                         const float phi_fract[2], const float (*Q_fract)[2],
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                         const float *transient_gain,
                         float g_decay_slope,
                         int len);
     void (*stereo_interpolate[2])(float (*l)[2], float (*r)[2],
                                   float h[2][4], float h_step[2][4],
                                   int len);
 } PSDSPContext;
 
 void ff_psdsp_init(PSDSPContext *s);
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 void ff_psdsp_init_arm(PSDSPContext *s);
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 void ff_psdsp_init_mips(PSDSPContext *s);
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 #endif /* LIBAVCODEC_AACPSDSP_H */