/*
  * MPEG-4 Parametric Stereo definitions and declarations
  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * 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.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * 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
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVCODEC_PS_H
 #define AVCODEC_PS_H
 
 #include <stdint.h>
 

 #include "aacpsdsp.h"

 #include "avcodec.h"
 #include "get_bits.h"
 

 #define PS_MAX_NUM_ENV 5
 #define PS_MAX_NR_IIDICC 34
 #define PS_MAX_NR_IPDOPD 17
 #define PS_MAX_SSB 91
 #define PS_MAX_AP_BANDS 50
 #define PS_QMF_TIME_SLOTS 32
 #define PS_MAX_DELAY 14
 #define PS_AP_LINKS 3
 #define PS_MAX_AP_DELAY 5
 

 typedef struct PSContext {

     int    start;
     int    enable_iid;
     int    iid_quant;
     int    nr_iid_par;
     int    nr_ipdopd_par;
     int    enable_icc;
     int    icc_mode;
     int    nr_icc_par;
     int    enable_ext;
     int    frame_class;
     int    num_env_old;
     int    num_env;
     int    enable_ipdopd;
     int    border_position[PS_MAX_NUM_ENV+1];

     int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Intensity Difference Parameters
     int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-Channel Coherence Parameters

     /* ipd/opd is iid/icc sized so that the same functions can handle both */

     int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Phase Difference Parameters
     int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Overall Phase Difference Parameters

     int    is34bands;
     int    is34bands_old;
 

     DECLARE_ALIGNED(16, float, in_buf)[5][44][2];
     DECLARE_ALIGNED(16, float, delay)[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2];
     DECLARE_ALIGNED(16, float, ap_delay)[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2];
     DECLARE_ALIGNED(16, float, peak_decay_nrg)[34];
     DECLARE_ALIGNED(16, float, power_smooth)[34];
     DECLARE_ALIGNED(16, float, peak_decay_diff_smooth)[34];
     DECLARE_ALIGNED(16, float, H11)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
     DECLARE_ALIGNED(16, float, H12)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
     DECLARE_ALIGNED(16, float, H21)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
     DECLARE_ALIGNED(16, float, H22)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];

     int8_t opd_hist[PS_MAX_NR_IIDICC];
     int8_t ipd_hist[PS_MAX_NR_IIDICC];

     PSDSPContext dsp;

 } PSContext;
 
 void ff_ps_init(void);
 void ff_ps_ctx_init(PSContext *ps);
 int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left);
 int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top);
 
 #endif /* AVCODEC_PS_H */