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diff --git a/faad2/src/libfaad/ps_dec.h b/faad2/src/libfaad/ps_dec.h
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+++ b/faad2/src/libfaad/ps_dec.h
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+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
+**  
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+** 
+** This program 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 General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software 
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** The "appropriate copyright message" mentioned in section 2c of the GPLv2
+** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
+**
+** $Id: ps_dec.h,v 1.13 2009/01/26 22:32:31 menno Exp $
+**/
+
+#ifndef __PS_DEC_H__
+#define __PS_DEC_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "bits.h"
+
+#define EXTENSION_ID_PS 2
+
+#define MAX_PS_ENVELOPES 5
+#define NO_ALLPASS_LINKS 3
+
+typedef struct
+{
+    /* bitstream parameters */
+    uint8_t enable_iid;
+    uint8_t enable_icc;
+    uint8_t enable_ext;
+
+    uint8_t iid_mode;
+    uint8_t icc_mode;
+    uint8_t nr_iid_par;
+    uint8_t nr_ipdopd_par;
+    uint8_t nr_icc_par;
+
+    uint8_t frame_class;
+    uint8_t num_env;
+
+    uint8_t border_position[MAX_PS_ENVELOPES+1];
+
+    uint8_t iid_dt[MAX_PS_ENVELOPES];
+    uint8_t icc_dt[MAX_PS_ENVELOPES];
+
+    uint8_t enable_ipdopd;
+    uint8_t ipd_mode;
+    uint8_t ipd_dt[MAX_PS_ENVELOPES];
+    uint8_t opd_dt[MAX_PS_ENVELOPES];
+
+    /* indices */
+    int8_t iid_index_prev[34];
+    int8_t icc_index_prev[34];
+    int8_t ipd_index_prev[17];
+    int8_t opd_index_prev[17];
+    int8_t iid_index[MAX_PS_ENVELOPES][34];
+    int8_t icc_index[MAX_PS_ENVELOPES][34];
+    int8_t ipd_index[MAX_PS_ENVELOPES][17];
+    int8_t opd_index[MAX_PS_ENVELOPES][17];
+
+    int8_t ipd_index_1[17];
+    int8_t opd_index_1[17];
+    int8_t ipd_index_2[17];
+    int8_t opd_index_2[17];
+
+    /* ps data was correctly read */
+    uint8_t ps_data_available;
+
+    /* a header has been read */
+    uint8_t header_read;
+
+    /* hybrid filterbank parameters */
+    void *hyb;
+    uint8_t use34hybrid_bands;
+    uint8_t numTimeSlotsRate;
+
+    /**/
+    uint8_t num_groups;
+    uint8_t num_hybrid_groups;
+    uint8_t nr_par_bands;
+    uint8_t nr_allpass_bands;
+    uint8_t decay_cutoff;
+
+    uint8_t *group_border;
+    uint16_t *map_group2bk;
+
+    /* filter delay handling */
+    uint8_t saved_delay;
+    uint8_t delay_buf_index_ser[NO_ALLPASS_LINKS];
+    uint8_t num_sample_delay_ser[NO_ALLPASS_LINKS];
+    uint8_t delay_D[64];
+    uint8_t delay_buf_index_delay[64];
+
+    complex_t delay_Qmf[14][64]; /* 14 samples delay max, 64 QMF channels */
+    complex_t delay_SubQmf[2][32]; /* 2 samples delay max (SubQmf is always allpass filtered) */
+    complex_t delay_Qmf_ser[NO_ALLPASS_LINKS][5][64]; /* 5 samples delay max (table 8.34), 64 QMF channels */
+    complex_t delay_SubQmf_ser[NO_ALLPASS_LINKS][5][32]; /* 5 samples delay max (table 8.34) */
+
+    /* transients */
+    real_t alpha_decay;
+    real_t alpha_smooth;
+
+    real_t P_PeakDecayNrg[34];
+    real_t P_prev[34];
+    real_t P_SmoothPeakDecayDiffNrg_prev[34];
+
+    /* mixing and phase */
+    complex_t h11_prev[50];
+    complex_t h12_prev[50];
+    complex_t h21_prev[50];
+    complex_t h22_prev[50];
+    uint8_t phase_hist;
+    complex_t ipd_prev[20][2];
+    complex_t opd_prev[20][2];
+
+} ps_info;
+
+/* ps_syntax.c */
+uint16_t ps_data(ps_info *ps, bitfile *ld, uint8_t *header);
+
+/* ps_dec.c */
+ps_info *ps_init(uint8_t sr_index, uint8_t numTimeSlotsRate);
+void ps_free(ps_info *ps);
+
+uint8_t ps_decode(ps_info *ps, qmf_t X_left[38][64], qmf_t X_right[38][64]);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+