From a68df043bfbc7f8f38332143577877846631eca4 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Tue, 25 Aug 2015 19:58:37 +0200 Subject: Update build environment - remove faad2 - remove mad - remove polarssl - remove pthreads - add libcurl - add vtparse with UTF8 support - update project to use Visual Studio 2015 --- faad2/src/libfaad/pns.c | 271 ------------------------------------------------ 1 file changed, 271 deletions(-) delete mode 100644 faad2/src/libfaad/pns.c (limited to 'faad2/src/libfaad/pns.c') diff --git a/faad2/src/libfaad/pns.c b/faad2/src/libfaad/pns.c deleted file mode 100644 index fad9800..0000000 --- a/faad2/src/libfaad/pns.c +++ /dev/null @@ -1,271 +0,0 @@ -/* -** 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: pns.c,v 1.38 2007/11/01 12:33:32 menno Exp $ -**/ - -#include "common.h" -#include "structs.h" - -#include "pns.h" - - -/* static function declarations */ -static void gen_rand_vector(real_t *spec, int16_t scale_factor, uint16_t size, - uint8_t sub, - /* RNG states */ uint32_t *__r1, uint32_t *__r2); - - -#ifdef FIXED_POINT - -#define DIV(A, B) (((int64_t)A << REAL_BITS)/B) - -#define step(shift) \ - if ((0x40000000l >> shift) + root <= value) \ - { \ - value -= (0x40000000l >> shift) + root; \ - root = (root >> 1) | (0x40000000l >> shift); \ - } else { \ - root = root >> 1; \ - } - -/* fixed point square root approximation */ -/* !!!! ONLY WORKS FOR EVEN %REAL_BITS% !!!! */ -real_t fp_sqrt(real_t value) -{ - real_t root = 0; - - step( 0); step( 2); step( 4); step( 6); - step( 8); step(10); step(12); step(14); - step(16); step(18); step(20); step(22); - step(24); step(26); step(28); step(30); - - if (root < value) - ++root; - - root <<= (REAL_BITS/2); - - return root; -} - -static real_t const pow2_table[] = -{ - COEF_CONST(1.0), - COEF_CONST(1.18920711500272), - COEF_CONST(1.41421356237310), - COEF_CONST(1.68179283050743) -}; -#endif - -/* The function gen_rand_vector(addr, size) generates a vector of length - with signed random values of average energy MEAN_NRG per random - value. A suitable random number generator can be realized using one - multiplication/accumulation per random value. -*/ -static INLINE void gen_rand_vector(real_t *spec, int16_t scale_factor, uint16_t size, - uint8_t sub, - /* RNG states */ uint32_t *__r1, uint32_t *__r2) -{ -#ifndef FIXED_POINT - uint16_t i; - real_t energy = 0.0; - - real_t scale = (real_t)1.0/(real_t)size; - - for (i = 0; i < size; i++) - { - real_t tmp = scale*(real_t)(int32_t)ne_rng(__r1, __r2); - spec[i] = tmp; - energy += tmp*tmp; - } - - scale = (real_t)1.0/(real_t)sqrt(energy); - scale *= (real_t)pow(2.0, 0.25 * scale_factor); - for (i = 0; i < size; i++) - { - spec[i] *= scale; - } -#else - uint16_t i; - real_t energy = 0, scale; - int32_t exp, frac; - - for (i = 0; i < size; i++) - { - /* this can be replaced by a 16 bit random generator!!!! */ - real_t tmp = (int32_t)ne_rng(__r1, __r2); - if (tmp < 0) - tmp = -(tmp & ((1<<(REAL_BITS-1))-1)); - else - tmp = (tmp & ((1<<(REAL_BITS-1))-1)); - - energy += MUL_R(tmp,tmp); - - spec[i] = tmp; - } - - energy = fp_sqrt(energy); - if (energy > 0) - { - scale = DIV(REAL_CONST(1),energy); - - exp = scale_factor >> 2; - frac = scale_factor & 3; - - /* IMDCT pre-scaling */ - exp -= sub; - - if (exp < 0) - scale >>= -exp; - else - scale <<= exp; - - if (frac) - scale = MUL_C(scale, pow2_table[frac]); - - for (i = 0; i < size; i++) - { - spec[i] = MUL_R(spec[i], scale); - } - } -#endif -} - -void pns_decode(ic_stream *ics_left, ic_stream *ics_right, - real_t *spec_left, real_t *spec_right, uint16_t frame_len, - uint8_t channel_pair, uint8_t object_type, - /* RNG states */ uint32_t *__r1, uint32_t *__r2) -{ - uint8_t g, sfb, b; - uint16_t size, offs; - - uint8_t group = 0; - uint16_t nshort = frame_len >> 3; - - uint8_t sub = 0; - -#ifdef FIXED_POINT - /* IMDCT scaling */ - if (object_type == LD) - { - sub = 9 /*9*/; - } else { - if (ics_left->window_sequence == EIGHT_SHORT_SEQUENCE) - sub = 7 /*7*/; - else - sub = 10 /*10*/; - } -#endif - - for (g = 0; g < ics_left->num_window_groups; g++) - { - /* Do perceptual noise substitution decoding */ - for (b = 0; b < ics_left->window_group_length[g]; b++) - { - for (sfb = 0; sfb < ics_left->max_sfb; sfb++) - { - if (is_noise(ics_left, g, sfb)) - { -#ifdef LTP_DEC - /* Simultaneous use of LTP and PNS is not prevented in the - syntax. If both LTP, and PNS are enabled on the same - scalefactor band, PNS takes precedence, and no prediction - is applied to this band. - */ - ics_left->ltp.long_used[sfb] = 0; - ics_left->ltp2.long_used[sfb] = 0; -#endif - -#ifdef MAIN_DEC - /* For scalefactor bands coded using PNS the corresponding - predictors are switched to "off". - */ - ics_left->pred.prediction_used[sfb] = 0; -#endif - - offs = ics_left->swb_offset[sfb]; - size = min(ics_left->swb_offset[sfb+1], ics_left->swb_offset_max) - offs; - - /* Generate random vector */ - gen_rand_vector(&spec_left[(group*nshort)+offs], - ics_left->scale_factors[g][sfb], size, sub, __r1, __r2); - } - -/* From the spec: - If the same scalefactor band and group is coded by perceptual noise - substitution in both channels of a channel pair, the correlation of - the noise signal can be controlled by means of the ms_used field: While - the default noise generation process works independently for each channel - (separate generation of random vectors), the same random vector is used - for both channels if ms_used[] is set for a particular scalefactor band - and group. In this case, no M/S stereo coding is carried out (because M/S - stereo coding and noise substitution coding are mutually exclusive). - If the same scalefactor band and group is coded by perceptual noise - substitution in only one channel of a channel pair the setting of ms_used[] - is not evaluated. -*/ - if (channel_pair) - { - if (is_noise(ics_right, g, sfb)) - { - if (((ics_left->ms_mask_present == 1) && - (ics_left->ms_used[g][sfb])) || - (ics_left->ms_mask_present == 2)) - { - uint16_t c; - - offs = ics_right->swb_offset[sfb]; - size = min(ics_right->swb_offset[sfb+1], ics_right->swb_offset_max) - offs; - - for (c = 0; c < size; c++) - { - spec_right[(group*nshort) + offs + c] = - spec_left[(group*nshort) + offs + c]; - } - } else /*if (ics_left->ms_mask_present == 0)*/ { -#ifdef LTP_DEC - ics_right->ltp.long_used[sfb] = 0; - ics_right->ltp2.long_used[sfb] = 0; -#endif -#ifdef MAIN_DEC - ics_right->pred.prediction_used[sfb] = 0; -#endif - - offs = ics_right->swb_offset[sfb]; - size = min(ics_right->swb_offset[sfb+1], ics_right->swb_offset_max) - offs; - - /* Generate random vector */ - gen_rand_vector(&spec_right[(group*nshort)+offs], - ics_right->scale_factors[g][sfb], size, sub, __r1, __r2); - } - } - } - } /* sfb */ - group++; - } /* b */ - } /* g */ -} -- cgit v1.2.3