Merge branch 'master' of git://git.videolan.org/vlc

[vlc] / modules / visualization / visual / fft.h

diff --git a/modules/visualization/visual/fft.h b/modules/visualization/visual/fft.h
index bf11dcc1705fa89346c5d3d4216119e149d217a8..942fd5d1af270167dc97fc10482cfedb3f1f4af4 100644 (file)
--- a/modules/visualization/visual/fft.h
+++ b/modules/visualization/visual/fft.h
@@ -1,17 +1,17 @@
 /*****************************************************************************
  * fft.h: Headers for iterative implementation of a FFT
  *****************************************************************************
- * $Id: fft.h,v 1.1 2003/08/29 16:56:43 zorglub Exp $
+ * $Id$
  *
  * Mainly taken from XMMS's code
- * 
+ *
  * Authors: Richard Boulton <richard@tartarus.org>
  *
  * 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
@@ -19,7 +19,7 @@
  *
  * 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, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
 #ifndef _FFT_H_
@@ -36,11 +36,19 @@ struct _struct_fft_state {
      /* Temporary data stores to perform FFT in. */
      float real[FFT_BUFFER_SIZE];
      float imag[FFT_BUFFER_SIZE];
+
+     /* */
+     unsigned int bitReverse[FFT_BUFFER_SIZE];
+
+     /* The next two tables could be made to use less space in memory, since they
+      * overlap hugely, but hey. */
+     float sintable[FFT_BUFFER_SIZE / 2];
+     float costable[FFT_BUFFER_SIZE / 2];
 };
 
 /* FFT prototypes */
 typedef struct _struct_fft_state fft_state;
-fft_state *fft_init (void);
+fft_state *visual_fft_init (void);
 void fft_perform (const sound_sample *input, float *output, fft_state *state);
 void fft_close (fft_state *state);