From 452f0cc3d9fdd792d2050ceaffd33b3d1611fcc3 Mon Sep 17 00:00:00 2001 From: llornkcor Date: Thu, 13 Nov 2003 06:23:48 +0000 Subject: added waveform --- (limited to 'noncore') 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; QSlider *timeSlider; int sd; -#if defined(QT_QWS_EBX) -#define DSPSTROUT "/dev/dsp" -#define DSPSTRIN "/dev/dsp1" -#define DSPSTRMIXEROUT "/dev/mixer" -#define DSPSTRMIXERIN "/dev/mixer1" -#else +// #if defined(QT_QWS_EBX) +// #define DSPSTROUT "/dev/dsp" +// #define DSPSTRIN "/dev/dsp1" +// #define DSPSTRMIXEROUT "/dev/mixer" +// #define DSPSTRMIXERIN "/dev/mixer1" +// #else #define DSPSTROUT "/dev/dsp" #define DSPSTRIN "/dev/dsp" #define DSPSTRMIXERIN "/dev/mixer" #define DSPSTRMIXEROUT "/dev/mixer" -#endif +//#endif // threaded recording void 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 @@ +/********************************************************************** + ** Copyright (C) 2000-2002 Trolltech AS. All rights reserved. + ** + ** This file is part of the Qtopia Environment. + ** + ** This file may be distributed and/or modified under the terms of the + ** GNU General Public License version 2 as published by the Free Software + ** Foundation and appearing in the file LICENSE.GPL included in the + ** packaging of this file. + ** + ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + ** + ** See http://www.trolltech.com/gpl/ for GPL licensing information. + ** + ** Contact info@trolltech.com if any conditions of this licensing are + ** not clear to you. + ** + **********************************************************************/ +#include "waveform.h" + +#include +#include + + +Waveform::Waveform( QWidget *parent, const char *name, WFlags fl ) + : QWidget( parent, name, fl ) +{ + pixmap = 0; + windowSize = 100; + samplesPerPixel = 8000 / (5 * windowSize); + currentValue = 0; + numSamples = 0; + windowPosn = 0; + window = 0; +} + + +void Waveform::changeSettings( int frequency, int channels ) +{ + makePixmap(); +// qWarning("change waveform %d, %d", frequency, channels); + samplesPerPixel = frequency * channels / (5 * windowSize); + qWarning("Waveform::changeSettings %d", samplesPerPixel); + if ( !samplesPerPixel ) + samplesPerPixel = 1; + currentValue = 0; + numSamples = 0; + windowPosn = 0; + draw(); +} + + +Waveform::~Waveform() +{ + if ( window ) + delete[] window; + if ( pixmap ) + delete pixmap; +} + + +void Waveform::reset() +{ + makePixmap(); + currentValue = 0; + numSamples = 0; + windowPosn = 0; + draw(); +} + + +void Waveform::newSamples( const short *buf, int len ) +{ + // Cache the object values in local variables. + int samplesPerPixel = this->samplesPerPixel; + int currentValue = this->currentValue; + int numSamples = this->numSamples; + short *window = this->window; + int windowPosn = this->windowPosn; + int windowSize = this->windowSize; + + // Average the incoming samples to scale them to the window. + while ( len > 0 ) { + currentValue += *buf++; + --len; + if ( ++numSamples >= samplesPerPixel ) { + window[windowPosn++] = (short)(currentValue / numSamples); + if ( windowPosn >= windowSize ) { + this->windowPosn = windowPosn; + draw(); + windowPosn = 0; + } + numSamples = 0; + currentValue = 0; + } + } + + // Copy the final state back to the object. +//qWarning("%d, %d, %d", currentValue, numSamples, windowPosn); + this->currentValue = currentValue; + this->numSamples = numSamples; + this->windowPosn = windowPosn; +} + + +void Waveform::makePixmap() +{ + if ( !pixmap ) { + pixmap = new QPixmap( size() ); + windowSize = pixmap->width(); + window = new short [windowSize]; + } +} + + +void Waveform::draw() +{ + pixmap->fill( Qt::black ); + QPainter painter; + painter.begin( pixmap ); + painter.setPen( Qt::green ); + + int middle = pixmap->height() / 2; + int mag; + short *window = this->window; + int posn; + int size = windowPosn; + for( posn = 0; posn < size; ++posn ) + { + mag = (window[posn] * middle / 32768); + painter.drawLine(posn, middle - mag, posn, middle + mag); + } + if ( windowPosn < windowSize ) + { + painter.drawLine(windowPosn, middle, windowSize, middle); + } + + painter.end(); + + paintEvent( 0 ); +} + + +void Waveform::paintEvent( QPaintEvent * ) +{ + QPainter painter; + painter.begin( this ); + + if ( pixmap ) { + painter.drawPixmap( 0, 0, *pixmap ); + } else { + painter.setPen( Qt::green ); + QSize sz = size(); + painter.drawLine(0, sz.height() / 2, sz.width(), sz.height() / 2); + } + + painter.end(); +} + 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 @@ +/********************************************************************** +** Copyright (C) 2000-2002 Trolltech AS. All rights reserved. +** +** This file is part of the Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef WAVEFORM_H +#define WAVEFORM_H + +#include +#include + + +class QLabel; + + +class Waveform : public QWidget +{ +public: + Waveform( QWidget *parent=0, const char *name=0, WFlags fl=0 ); + ~Waveform(); + +public: + void changeSettings( int frequency, int channels ); + void reset(); + void newSamples( const short *buf, int len ); + +private: + + void makePixmap(); + void draw(); + +protected: + + void paintEvent( QPaintEvent *event ); + +private: + int samplesPerPixel; + int currentValue; + int numSamples; + short *window; + int windowPosn; + int windowSize; + QPixmap *pixmap; + +}; + + +#endif + -- cgit v0.9.0.2