ref: 596df37e0820fe8cdafed3c077d9b1bbb2991803
dir: /libfaad/tns.h/
/* ** FAAD - Freeware Advanced Audio Decoder ** Copyright (C) 2002 M. Bakker ** ** 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. ** ** $Id: tns.h,v 1.6 2003/02/14 14:54:25 menno Exp $ **/ #ifndef __TNS_H__ #define __TNS_H__ #ifdef __cplusplus extern "C" { #endif #define TNS_MAX_ORDER 20 void tns_decode_frame(ic_stream *ics, tns_info *tns, uint8_t sr_index, uint8_t object_type, real_t *spec, uint16_t frame_len); void tns_encode_frame(ic_stream *ics, tns_info *tns, uint8_t sr_index, uint8_t object_type, real_t *spec, uint16_t frame_len); static void tns_decode_coef(uint8_t order, uint8_t coef_res_bits, uint8_t coef_compress, uint8_t *coef, real_t *a); static void tns_ar_filter(real_t *spectrum, uint16_t size, int8_t inc, real_t *lpc, uint8_t order); static void tns_ma_filter(real_t *spectrum, uint16_t size, int8_t inc, real_t *lpc, uint8_t order); #ifdef __cplusplus } #endif #endif