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authorllornkcor <llornkcor>2003-11-13 06:23:48 (UTC)
committer llornkcor <llornkcor>2003-11-13 06:23:48 (UTC)
commit452f0cc3d9fdd792d2050ceaffd33b3d1611fcc3 (patch) (unidiff)
treed391cef8c2c278f335c18344e4c6bf01589eaa50 /noncore
parenta539861cbebf3517472d01ee6e9b34e9f763156e (diff)
downloadopie-452f0cc3d9fdd792d2050ceaffd33b3d1611fcc3.zip
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added waveform
Diffstat (limited to 'noncore') (more/less context) (ignore whitespace changes)
-rw-r--r--noncore/multimedia/opierec/qtrec.cpp14
-rw-r--r--noncore/multimedia/opierec/waveform.cpp160
-rw-r--r--noncore/multimedia/opierec/waveform.h63
3 files changed, 230 insertions, 7 deletions
diff --git a/noncore/multimedia/opierec/qtrec.cpp b/noncore/multimedia/opierec/qtrec.cpp
index 2bf795f..1e36c96 100644
--- a/noncore/multimedia/opierec/qtrec.cpp
+++ b/noncore/multimedia/opierec/qtrec.cpp
@@ -91,17 +91,17 @@ QLabel *timeLabel;
91QSlider *timeSlider; 91QSlider *timeSlider;
92int sd; 92int sd;
93 93
94#if defined(QT_QWS_EBX) 94// #if defined(QT_QWS_EBX)
95#define DSPSTROUT "/dev/dsp" 95// #define DSPSTROUT "/dev/dsp"
96#define DSPSTRIN "/dev/dsp1" 96// #define DSPSTRIN "/dev/dsp1"
97#define DSPSTRMIXEROUT "/dev/mixer" 97// #define DSPSTRMIXEROUT "/dev/mixer"
98#define DSPSTRMIXERIN "/dev/mixer1" 98// #define DSPSTRMIXERIN "/dev/mixer1"
99#else 99// #else
100#define DSPSTROUT "/dev/dsp" 100#define DSPSTROUT "/dev/dsp"
101#define DSPSTRIN "/dev/dsp" 101#define DSPSTRIN "/dev/dsp"
102#define DSPSTRMIXERIN "/dev/mixer" 102#define DSPSTRMIXERIN "/dev/mixer"
103#define DSPSTRMIXEROUT "/dev/mixer" 103#define DSPSTRMIXEROUT "/dev/mixer"
104#endif 104//#endif
105 105
106// threaded recording 106// threaded recording
107void quickRec() { 107void quickRec() {
diff --git a/noncore/multimedia/opierec/waveform.cpp b/noncore/multimedia/opierec/waveform.cpp
new file mode 100644
index 0000000..05be373
--- a/dev/null
+++ b/noncore/multimedia/opierec/waveform.cpp
@@ -0,0 +1,160 @@
1/**********************************************************************
2 ** Copyright (C) 2000-2002 Trolltech AS. All rights reserved.
3 **
4 ** This file is part of the Qtopia Environment.
5 **
6 ** This file may be distributed and/or modified under the terms of the
7 ** GNU General Public License version 2 as published by the Free Software
8 ** Foundation and appearing in the file LICENSE.GPL included in the
9 ** packaging of this file.
10 **
11 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
12 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
13 **
14 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
15 **
16 ** Contact info@trolltech.com if any conditions of this licensing are
17 ** not clear to you.
18 **
19 **********************************************************************/
20#include "waveform.h"
21
22#include <qlabel.h>
23#include <qpainter.h>
24
25
26Waveform::Waveform( QWidget *parent, const char *name, WFlags fl )
27 : QWidget( parent, name, fl )
28{
29 pixmap = 0;
30 windowSize = 100;
31 samplesPerPixel = 8000 / (5 * windowSize);
32 currentValue = 0;
33 numSamples = 0;
34 windowPosn = 0;
35 window = 0;
36}
37
38
39void Waveform::changeSettings( int frequency, int channels )
40{
41 makePixmap();
42// qWarning("change waveform %d, %d", frequency, channels);
43 samplesPerPixel = frequency * channels / (5 * windowSize);
44 qWarning("Waveform::changeSettings %d", samplesPerPixel);
45 if ( !samplesPerPixel )
46 samplesPerPixel = 1;
47 currentValue = 0;
48 numSamples = 0;
49 windowPosn = 0;
50 draw();
51}
52
53
54Waveform::~Waveform()
55{
56 if ( window )
57 delete[] window;
58 if ( pixmap )
59 delete pixmap;
60}
61
62
63void Waveform::reset()
64{
65 makePixmap();
66 currentValue = 0;
67 numSamples = 0;
68 windowPosn = 0;
69 draw();
70}
71
72
73void Waveform::newSamples( const short *buf, int len )
74{
75 // Cache the object values in local variables.
76 int samplesPerPixel = this->samplesPerPixel;
77 int currentValue = this->currentValue;
78 int numSamples = this->numSamples;
79 short *window = this->window;
80 int windowPosn = this->windowPosn;
81 int windowSize = this->windowSize;
82
83 // Average the incoming samples to scale them to the window.
84 while ( len > 0 ) {
85 currentValue += *buf++;
86 --len;
87 if ( ++numSamples >= samplesPerPixel ) {
88 window[windowPosn++] = (short)(currentValue / numSamples);
89 if ( windowPosn >= windowSize ) {
90 this->windowPosn = windowPosn;
91 draw();
92 windowPosn = 0;
93 }
94 numSamples = 0;
95 currentValue = 0;
96 }
97 }
98
99 // Copy the final state back to the object.
100//qWarning("%d, %d, %d", currentValue, numSamples, windowPosn);
101 this->currentValue = currentValue;
102 this->numSamples = numSamples;
103 this->windowPosn = windowPosn;
104}
105
106
107void Waveform::makePixmap()
108{
109 if ( !pixmap ) {
110 pixmap = new QPixmap( size() );
111 windowSize = pixmap->width();
112 window = new short [windowSize];
113 }
114}
115
116
117void Waveform::draw()
118{
119 pixmap->fill( Qt::black );
120 QPainter painter;
121 painter.begin( pixmap );
122 painter.setPen( Qt::green );
123
124 int middle = pixmap->height() / 2;
125 int mag;
126 short *window = this->window;
127 int posn;
128 int size = windowPosn;
129 for( posn = 0; posn < size; ++posn )
130 {
131 mag = (window[posn] * middle / 32768);
132 painter.drawLine(posn, middle - mag, posn, middle + mag);
133 }
134 if ( windowPosn < windowSize )
135 {
136 painter.drawLine(windowPosn, middle, windowSize, middle);
137 }
138
139 painter.end();
140
141 paintEvent( 0 );
142}
143
144
145void Waveform::paintEvent( QPaintEvent * )
146{
147 QPainter painter;
148 painter.begin( this );
149
150 if ( pixmap ) {
151 painter.drawPixmap( 0, 0, *pixmap );
152 } else {
153 painter.setPen( Qt::green );
154 QSize sz = size();
155 painter.drawLine(0, sz.height() / 2, sz.width(), sz.height() / 2);
156 }
157
158 painter.end();
159}
160
diff --git a/noncore/multimedia/opierec/waveform.h b/noncore/multimedia/opierec/waveform.h
new file mode 100644
index 0000000..b9a4c70
--- a/dev/null
+++ b/noncore/multimedia/opierec/waveform.h
@@ -0,0 +1,63 @@
1/**********************************************************************
2** Copyright (C) 2000-2002 Trolltech AS. All rights reserved.
3**
4** This file is part of the Qtopia Environment.
5**
6** This file may be distributed and/or modified under the terms of the
7** GNU General Public License version 2 as published by the Free Software
8** Foundation and appearing in the file LICENSE.GPL included in the
9** packaging of this file.
10**
11** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
12** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
13**
14** See http://www.trolltech.com/gpl/ for GPL licensing information.
15**
16** Contact info@trolltech.com if any conditions of this licensing are
17** not clear to you.
18**
19**********************************************************************/
20#ifndef WAVEFORM_H
21#define WAVEFORM_H
22
23#include <qwidget.h>
24#include <qpixmap.h>
25
26
27class QLabel;
28
29
30class Waveform : public QWidget
31{
32public:
33 Waveform( QWidget *parent=0, const char *name=0, WFlags fl=0 );
34 ~Waveform();
35
36public:
37 void changeSettings( int frequency, int channels );
38 void reset();
39 void newSamples( const short *buf, int len );
40
41private:
42
43 void makePixmap();
44 void draw();
45
46protected:
47
48 void paintEvent( QPaintEvent *event );
49
50private:
51 int samplesPerPixel;
52 int currentValue;
53 int numSamples;
54 short *window;
55 int windowPosn;
56 int windowSize;
57 QPixmap *pixmap;
58
59};
60
61
62#endif
63