ref: 1a8846b50eb297b9faa06e1273b1589a7ee833ca
dir: /libfaad/pns.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: pns.h,v 1.5 2002/06/13 11:03:28 menno Exp $ **/ #ifndef __PNS_H__ #define __PNS_H__ #ifdef __cplusplus extern "C" { #endif #include "syntax.h" #include "common.h" #define NOISE_OFFSET 90 #define MEAN_NRG 1.537228e+18 /* (2^31)^2 / 3 */ void pns_decode(ic_stream *ics, real_t *spec, uint16_t frame_len); static INLINE int32_t random2(); static void gen_rand_vector(real_t *spec, uint16_t scale_factor, uint16_t size); static INLINE uint8_t is_noise(ic_stream *ics, uint8_t group, uint8_t sfb) { if (ics->sfb_cb[group][sfb] == NOISE_HCB) return 1; return 0; } #ifdef __cplusplus } #endif #endif