From 65de1cc6af31f547bd36d320f09cbcc6e6975421 Mon Sep 17 00:00:00 2001 From: Dave Chapman Date: Mon, 31 Oct 2005 18:56:29 +0000 Subject: Initial check-in of unmodified libfaad (part of the FAAD2 project). This is the last version of libfaad available under the GPL - the state of FAAD2 CVS at midnight on 2005-02-01 git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7699 a1c6a512-1295-4272-9138-f99709370657 --- apps/codecs/libfaad/pulse.c | 56 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 apps/codecs/libfaad/pulse.c (limited to 'apps/codecs/libfaad/pulse.c') diff --git a/apps/codecs/libfaad/pulse.c b/apps/codecs/libfaad/pulse.c new file mode 100644 index 0000000000..d75877db70 --- /dev/null +++ b/apps/codecs/libfaad/pulse.c @@ -0,0 +1,56 @@ +/* +** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding +** Copyright (C) 2003-2004 M. Bakker, Ahead Software 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. +** +** Commercial non-GPL licensing of this software is possible. +** For more info contact Ahead Software through Mpeg4AAClicense@nero.com. +** +** $Id$ +**/ + +#include "common.h" +#include "structs.h" + +#include "syntax.h" +#include "pulse.h" + +uint8_t pulse_decode(ic_stream *ics, int16_t *spec_data, uint16_t framelen) +{ + uint8_t i; + uint16_t k; + pulse_info *pul = &(ics->pul); + + k = ics->swb_offset[pul->pulse_start_sfb]; + + for (i = 0; i <= pul->number_pulse; i++) + { + k += pul->pulse_offset[i]; + + if (k >= framelen) + return 15; /* should not be possible */ + + if (spec_data[k] > 0) + spec_data[k] += pul->pulse_amp[i]; + else + spec_data[k] -= pul->pulse_amp[i]; + } + + return 0; +} -- cgit v1.2.3