CARPLAY版本整理

MXC_A27-PCB4.5-270T/lib/faad2/libfaad/pulse.c

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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: pulse.c,v 1.21 2007/11/01 12:33:34 menno Exp $
+**/
+#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 = min(ics->swb_offset[pul->pulse_start_sfb], ics->swb_offset_max);
+
+    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;
+}