juce/source/extras/JuceDemo/Source/demos/AudioDemoTabComponent.cpp

   1 /*
   2   ==============================================================================
   3
   4   This is an automatically generated file created by the Jucer!
   5
   6   Creation date:  1 May 2011 12:07:35pm
   7
   8   Be careful when adding custom code to these files, as only the code within
   9   the "//[xyz]" and "//[/xyz]" sections will be retained when the file is loaded
  10   and re-saved.
  11
  12   Jucer version: 1.12
  13
  14   ------------------------------------------------------------------------------
  15
  16   The Jucer is part of the JUCE library - "Jules' Utility Class Extensions"
  17   Copyright 2004-6 by Raw Material Software ltd.
  18
  19   ==============================================================================
  20 */
  21
  22 //[Headers] You can add your own extra header files here...
  23 //[/Headers]
  24
  25 #include "AudioDemoTabComponent.h"
  26 #include "AudioDemoSetupPage.h"
  27 #include "AudioDemoPlaybackPage.h"
  28 #include "AudioDemoSynthPage.h"
  29 #include "AudioDemoLatencyPage.h"
  30 #include "AudioDemoRecordPage.h"
  31
  32
  33 //[MiscUserDefs] You can add your own user definitions and misc code here...
  34 LiveAudioInputDisplayComp::LiveAudioInputDisplayComp()
  35 {
  36     nextSample = subSample = 0;
  37     accumulator = 0;
  38     zeromem (samples, sizeof (samples));
  39     setOpaque (true);
  40
  41     startTimer (1000 / 50); // use a timer to keep repainting this component
  42 }
  43
  44 LiveAudioInputDisplayComp::~LiveAudioInputDisplayComp()
  45 {
  46 }
  47
  48 void LiveAudioInputDisplayComp::paint (Graphics& g)
  49 {
  50     g.fillAll (Colours::black);
  51
  52     g.setColour (Colours::green);
  53     const float midY = getHeight() * 0.5f;
  54     int sampleNum = (nextSample + numElementsInArray (samples) - 1);
  55
  56     for (int x = jmin (getWidth(), numElementsInArray (samples)); --x >= 0;)
  57     {
  58         const float sampleSize = midY * samples [sampleNum-- % numElementsInArray (samples)];
  59         g.drawVerticalLine (x, midY - sampleSize, midY + sampleSize);
  60     }
  61 }
  62
  63 void LiveAudioInputDisplayComp::timerCallback()
  64 {
  65     repaint();
  66 }
  67
  68 void LiveAudioInputDisplayComp::audioDeviceAboutToStart (AudioIODevice*)
  69 {
  70     zeromem (samples, sizeof (samples));
  71 }
  72
  73 void LiveAudioInputDisplayComp::audioDeviceStopped()
  74 {
  75     zeromem (samples, sizeof (samples));
  76 }
  77
  78 void LiveAudioInputDisplayComp::audioDeviceIOCallback (const float** inputChannelData, int numInputChannels,
  79                                                        float** outputChannelData, int numOutputChannels, int numSamples)
  80 {
  81     for (int i = 0; i < numSamples; ++i)
  82     {
  83         for (int chan = 0; chan < numInputChannels; ++chan)
  84         {
  85             if (inputChannelData[chan] != 0)
  86                 accumulator += fabsf (inputChannelData[chan][i]);
  87         }
  88
  89         const int numSubSamples = 100; // how many input samples go onto one pixel.
  90         const float boost = 10.0f;     // how much to boost the levels to make it more visible.
  91
  92         if (subSample == 0)
  93         {
  94             samples[nextSample] = accumulator * boost / numSubSamples;
  95             nextSample = (nextSample + 1) % numElementsInArray (samples);
  96             subSample = numSubSamples;
  97             accumulator = 0;
  98         }
  99         else
 100         {
 101             --subSample;
 102         }
 103     }
 104
 105     // We need to clear the output buffers, in case they're full of junk..
 106     for (int i = 0; i < numOutputChannels; ++i)
 107         if (outputChannelData[i] != 0)
 108             zeromem (outputChannelData[i], sizeof (float) * numSamples);
 109 }
 110
 111 //[/MiscUserDefs]
 112
 113 //==============================================================================
 114 AudioDemoTabComponent::AudioDemoTabComponent ()
 115     : tabbedComponent (0)
 116 {
 117     addAndMakeVisible (tabbedComponent = new TabbedComponent (TabbedButtonBar::TabsAtTop));
 118     tabbedComponent->setTabBarDepth (30);
 119     tabbedComponent->addTab (L"Audio Device Setup", Colours::lightgrey, new AudioDemoSetupPage (deviceManager), true);
 120     tabbedComponent->addTab (L"File Playback", Colours::lightgrey, new AudioDemoPlaybackPage (deviceManager), true);
 121     tabbedComponent->addTab (L"Synth Playback", Colours::lightgrey, new AudioDemoSynthPage (deviceManager), true);
 122     tabbedComponent->addTab (L"Latency Test", Colours::lightgrey, new AudioDemoLatencyPage (deviceManager), true);
 123     tabbedComponent->addTab (L"Recording", Colours::lightgrey, new AudioDemoRecordPage (deviceManager), true);
 124     tabbedComponent->setCurrentTabIndex (0);
 125
 126
 127     //[UserPreSize]
 128     deviceManager.initialise (2, 2, 0, true, String::empty, 0);
 129     //[/UserPreSize]
 130
 131     setSize (600, 400);
 132
 133
 134     //[Constructor] You can add your own custom stuff here..
 135     //[/Constructor]
 136 }
 137
 138 AudioDemoTabComponent::~AudioDemoTabComponent()
 139 {
 140     //[Destructor_pre]. You can add your own custom destruction code here..
 141     //[/Destructor_pre]
 142
 143     deleteAndZero (tabbedComponent);
 144
 145
 146     //[Destructor]. You can add your own custom destruction code here..
 147     //[/Destructor]
 148 }
 149
 150 //==============================================================================
 151 void AudioDemoTabComponent::paint (Graphics& g)
 152 {
 153     //[UserPrePaint] Add your own custom painting code here..
 154     //[/UserPrePaint]
 155
 156     g.fillAll (Colours::white);
 157
 158     //[UserPaint] Add your own custom painting code here..
 159     //[/UserPaint]
 160 }
 161
 162 void AudioDemoTabComponent::resized()
 163 {
 164     tabbedComponent->setBounds (0, 0, getWidth() - 0, getHeight() - 0);
 165     //[UserResized] Add your own custom resize handling here..
 166     //[/UserResized]
 167 }
 168
 169
 170
 171 //[MiscUserCode] You can add your own definitions of your custom methods or any other code here...
 172 //==============================================================================
 173 Component* createAudioDemo()
 174 {
 175     return new AudioDemoTabComponent();
 176 }
 177
 178 //[/MiscUserCode]
 179
 180
 181 //==============================================================================
 182 #if 0
 183 /*  -- Jucer information section --
 184
 185     This is where the Jucer puts all of its metadata, so don't change anything in here!
 186
 187 BEGIN_JUCER_METADATA
 188
 189 <JUCER_COMPONENT documentType="Component" className="AudioDemoTabComponent" componentName=""
 190                  parentClasses="public Component" constructorParams="" variableInitialisers=""
 191                  snapPixels="8" snapActive="1" snapShown="1" overlayOpacity="0.330000013"
 192                  fixedSize="0" initialWidth="600" initialHeight="400">
 193   <BACKGROUND backgroundColour="ffffffff"/>
 194   <TABBEDCOMPONENT name="new tabbed component" id="83c980d7793cdced" memberName="tabbedComponent"
 195                    virtualName="" explicitFocusOrder="0" pos="0 0 0M 0M" orientation="top"
 196                    tabBarDepth="30" initialTab="0">
 197     <TAB name="Audio Device Setup" colour="ffd3d3d3" useJucerComp="1"
 198          contentClassName="" constructorParams="deviceManager" jucerComponentFile="AudioDemoSetupPage.cpp"/>
 199     <TAB name="File Playback" colour="ffd3d3d3" useJucerComp="1" contentClassName=""
 200          constructorParams="deviceManager" jucerComponentFile="AudioDemoPlaybackPage.cpp"/>
 201     <TAB name="Synth Playback" colour="ffd3d3d3" useJucerComp="1" contentClassName=""
 202          constructorParams="deviceManager" jucerComponentFile="AudioDemoSynthPage.cpp"/>
 203     <TAB name="Latency Test" colour="ffd3d3d3" useJucerComp="1" contentClassName=""
 204          constructorParams="deviceManager" jucerComponentFile="AudioDemoLatencyPage.cpp"/>
 205     <TAB name="Recording" colour="ffd3d3d3" useJucerComp="1" contentClassName=""
 206          constructorParams="deviceManager" jucerComponentFile="AudioDemoRecordPage.cpp"/>
 207   </TABBEDCOMPONENT>
 208 </JUCER_COMPONENT>
 209
 210 END_JUCER_METADATA
 211 */
 212 #endif