mirror of
https://github.com/gnustep/apps-gorm.git
synced 2025-02-23 03:31:01 +00:00
125 lines
2.6 KiB
Objective-C
125 lines
2.6 KiB
Objective-C
/** <title>GormSoundView</title>
|
|
|
|
<abstract>Visualizes a sound.<abstract>
|
|
|
|
Copyright (C) 2004 Free Software Foundation, Inc.
|
|
Author: Gregory John Casamento <greg_casamento@yahoo.com>
|
|
Date: May 2004
|
|
|
|
This file is part of GNUstep.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 3 of the License, or (at your option) any later version.
|
|
|
|
This library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; see the file COPYING.LIB.
|
|
If not, write to the Free Software Foundation,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/* All rights reserved */
|
|
|
|
#include <AppKit/AppKit.h>
|
|
#include <AppKit/PSOperators.h>
|
|
|
|
#include "GormSoundView.h"
|
|
|
|
// add a data method to the NSSound class...
|
|
@interface NSSound (SoundView)
|
|
- (NSData *)data;
|
|
@end
|
|
|
|
@implementation NSSound (SoundView)
|
|
- (NSData *)data
|
|
{
|
|
return _data;
|
|
}
|
|
@end
|
|
|
|
/*
|
|
static float findMax(NSData *data)
|
|
{
|
|
float max = 0.0;
|
|
NSInteger index = 0;
|
|
float *array = (float *)[data bytes];
|
|
NSInteger len = [data length];
|
|
|
|
// find the maximum...
|
|
for(index = 0; index < len; index++)
|
|
{
|
|
float d = array[index];
|
|
if(d > max)
|
|
{
|
|
max = d;
|
|
}
|
|
}
|
|
|
|
return max;
|
|
}
|
|
*/
|
|
|
|
@implementation GormSoundView
|
|
- (void) setSound: (NSSound *)sound
|
|
{
|
|
NSLog(@"Set sound...");
|
|
ASSIGN(_sound,sound);
|
|
[self setNeedsDisplay: YES];
|
|
}
|
|
|
|
- (NSSound *)sound
|
|
{
|
|
return _sound;
|
|
}
|
|
|
|
/*
|
|
- (void) drawRect: (NSRect)aRect
|
|
{
|
|
float w = aRect.size.width;
|
|
float h = aRect.size.height;
|
|
float offset = (h/2);
|
|
NSData *soundData = [_sound data];
|
|
float *data = 0;
|
|
float x1 = 0, x2 = 0, y1 = offset, y2 = offset;
|
|
float max = findMax(soundData);
|
|
float multiplier = h/max;
|
|
NSInteger length = [soundData length];
|
|
NSInteger index = 0;
|
|
NSInteger step = (length/(int)w);
|
|
|
|
[super drawRect: aRect];
|
|
|
|
PSsetrgbcolor(1.0,0,0); // red
|
|
data = (float *)[soundData bytes];
|
|
|
|
if( length > 2 )
|
|
{
|
|
|
|
x1 = (data[0] * multiplier);
|
|
y1 = offset;
|
|
for(index = step; index < w; index+=step)
|
|
{
|
|
NSInteger i = (int)index;
|
|
float d = data[i];
|
|
|
|
// calc new position...
|
|
x2 = d * multiplier;
|
|
y2 = index + offset;
|
|
|
|
PSmoveto(x1,y1);
|
|
PSlineto(x2,y2);
|
|
|
|
// move to old vars...
|
|
x1 = x2;
|
|
y1 = y2;
|
|
}
|
|
}
|
|
}
|
|
*/
|
|
@end
|