Use Tremor IMDCT for WMA. Gives a ~20% speedup on ARM and coldfire. All my test samples gave equivilent or better accuracy (>>16 bit), but there may still be problems. Code becomes somewhat less readable since the IMDCT has bits of Vorbis in it, but this is not a serious issue and the old ffmpeg transform remains in SVN if anyone wants it. Also, WMA now passes Vorbis as the fastest transform codec on ARM, although MPC remains the fastest lossy codec overall.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18084 a1c6a512-1295-4272-9138-f99709370657

apps/codecs/libfaad/SOURCES

@@ -33,3 +33,4 @@ sbr_tf_grid.c
 specrec.c
 syntax.c
 tns.c
+mdct2.c

apps/codecs/libfaad/filtbank.c

@@ -1,19 +1,19 @@
 /*
 ** 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 
+** 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
@@ -42,6 +42,7 @@
 #include "kbd_win.h"
 #include "sine_win.h"
 #include "mdct.h"
+#include "mdct2.h"
 
 
 fb_info *filter_bank_init(uint16_t frame_len)