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/* Libvisual-plugins - Standard plugins for libvisual
*
* Copyright (C) 2002, 2003, 2004, 2005, 2006 Dennis Smit <ds@nerds-incorporated.org>
*
* Authors: Dennis Smit <ds@nerds-incorporated.org>
*
* $Id: gfx-analyzer.c,v 1.6 2006/01/22 13:25:26 synap Exp $
*
* 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
*/
#include "oinksie.h"
#include "common.h"
#include "screen.h"
#include "audio.h"
#include "gfx-misc.h"
#include "gfx-analyzer.h"
#define ANALYZER_BANDS 32
void _oink_gfx_analyzer_stereo (OinksiePrivate *priv, uint8_t *buf, int color, int y)
{
int adder = (priv->screen_width - ((priv->screen_halfwidth / ANALYZER_BANDS) * ANALYZER_BANDS * 2)) / 2;
int i;
int y1;
int x1;
int y2;
int x2;
int real_x = 0;
int real_x_add = (priv->screen_halfwidth / ANALYZER_BANDS);
y2 = y;
x2 = 0;
for (i = ANALYZER_BANDS; i >= 0; i--)
{
y1 = (-(priv->audio.freq[0][i] * priv->screen_height) * 2) + y;
x1 = real_x += real_x_add;
if (y1 < 0) y1 = 0;
_oink_gfx_line (priv, buf, color, x1 + adder, y1, x2 + adder, y2);
y2 = y1;
x2 = x1;
}
for (i = 1; i < ANALYZER_BANDS; i++)
{
y1 = (-(priv->audio.freq[1][i] * priv->screen_height) * 2) + y;
if (y1 == ANALYZER_BANDS - 1)
y1 = y;
x1 = real_x += real_x_add;
if (y1 < 0) y1 = 0;
_oink_gfx_line (priv, buf, color, x1 + adder, y1, x2 + adder, y2);
y2 = y1;
x2 = x1;
}
}
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