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Added a simple spectrogram example app.

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jules 2015-02-05 09:39:30 +00:00
parent 7b0a6157fd
commit 9b70c3ee9b
24 changed files with 7026 additions and 0 deletions
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examples/SimpleFFTExample/Builds/MacOSX/Info.plist Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist>
<dict>
<key>CFBundleExecutable</key>
<string>${EXECUTABLE_NAME}</string>
<key>CFBundleIconFile</key>
<string></string>
<key>CFBundleIdentifier</key>
<string>com.yourcompany.SimpleFFTExample</string>
<key>CFBundleName</key>
<string>SimpleFFTExample</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleShortVersionString</key>
<string>1.0.0</string>
<key>CFBundleVersion</key>
<string>1.0.0</string>
<key>NSHumanReadableCopyright</key>
<string></string>
<key>NSHighResolutionCapable</key>
<true/>
</dict>
</plist>

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examples/SimpleFFTExample/Builds/MacOSX/RecentFilesMenuTemplate.nib generated Normal file
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Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2013
Project("{E2F0E2D2-88FF-EF53-E779-C571B75BEB02}") = "SimpleFFTExample", "SimpleFFTExample.vcxproj", "{D3EA4D64-39DA-D13A-AC10-C306C86BA9F5}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
Release|Win32 = Release|Win32
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{D3EA4D64-39DA-D13A-AC10-C306C86BA9F5}.Debug|Win32.ActiveCfg = Debug|Win32
{D3EA4D64-39DA-D13A-AC10-C306C86BA9F5}.Debug|Win32.Build.0 = Debug|Win32
{D3EA4D64-39DA-D13A-AC10-C306C86BA9F5}.Release|Win32.ActiveCfg = Release|Win32
{D3EA4D64-39DA-D13A-AC10-C306C86BA9F5}.Release|Win32.Build.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
EndGlobal

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examples/SimpleFFTExample/Builds/VisualStudio2013/resources.rc Normal file
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#ifdef JUCE_USER_DEFINED_RC_FILE
#include JUCE_USER_DEFINED_RC_FILE
#else
#undef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
VS_VERSION_INFO VERSIONINFO
FILEVERSION 1,0,0,0
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904E4"
BEGIN
VALUE "FileDescription", "SimpleFFTExample\0"
VALUE "FileVersion", "1.0.0\0"
VALUE "ProductName", "SimpleFFTExample\0"
VALUE "ProductVersion", "1.0.0\0"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 65001
END
END
#endif

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examples/SimpleFFTExample/JuceLibraryCode/AppConfig.h Normal file
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/*
IMPORTANT! This file is auto-generated each time you save your
project - if you alter its contents, your changes may be overwritten!
There's a section below where you can add your own custom code safely, and the
Introjucer will preserve the contents of that block, but the best way to change
any of these definitions is by using the Introjucer's project settings.
Any commented-out settings will assume their default values.
*/
#ifndef __JUCE_APPCONFIG_CGCXPD__
#define __JUCE_APPCONFIG_CGCXPD__
//==============================================================================
// [BEGIN_USER_CODE_SECTION]
// (You can add your own code in this section, and the Introjucer will not overwrite it)
// [END_USER_CODE_SECTION]
//==============================================================================
#define JUCE_MODULE_AVAILABLE_juce_audio_basics 1
#define JUCE_MODULE_AVAILABLE_juce_audio_devices 1
#define JUCE_MODULE_AVAILABLE_juce_audio_formats 1
#define JUCE_MODULE_AVAILABLE_juce_audio_processors 1
#define JUCE_MODULE_AVAILABLE_juce_audio_utils 1
#define JUCE_MODULE_AVAILABLE_juce_core 1
#define JUCE_MODULE_AVAILABLE_juce_data_structures 1
#define JUCE_MODULE_AVAILABLE_juce_events 1
#define JUCE_MODULE_AVAILABLE_juce_graphics 1
#define JUCE_MODULE_AVAILABLE_juce_gui_basics 1
#define JUCE_MODULE_AVAILABLE_juce_gui_extra 1
//==============================================================================
// juce_audio_devices flags:
#ifndef JUCE_ASIO
//#define JUCE_ASIO
#endif
#ifndef JUCE_WASAPI
//#define JUCE_WASAPI
#endif
#ifndef JUCE_WASAPI_EXCLUSIVE
//#define JUCE_WASAPI_EXCLUSIVE
#endif
#ifndef JUCE_DIRECTSOUND
//#define JUCE_DIRECTSOUND
#endif
#ifndef JUCE_ALSA
//#define JUCE_ALSA
#endif
#ifndef JUCE_JACK
//#define JUCE_JACK
#endif
#ifndef JUCE_USE_ANDROID_OPENSLES
//#define JUCE_USE_ANDROID_OPENSLES
#endif
#ifndef JUCE_USE_CDREADER
//#define JUCE_USE_CDREADER
#endif
#ifndef JUCE_USE_CDBURNER
//#define JUCE_USE_CDBURNER
#endif
//==============================================================================
// juce_audio_formats flags:
#ifndef JUCE_USE_FLAC
//#define JUCE_USE_FLAC
#endif
#ifndef JUCE_USE_OGGVORBIS
//#define JUCE_USE_OGGVORBIS
#endif
#ifndef JUCE_USE_MP3AUDIOFORMAT
//#define JUCE_USE_MP3AUDIOFORMAT
#endif
#ifndef JUCE_USE_LAME_AUDIO_FORMAT
//#define JUCE_USE_LAME_AUDIO_FORMAT
#endif
#ifndef JUCE_USE_WINDOWS_MEDIA_FORMAT
//#define JUCE_USE_WINDOWS_MEDIA_FORMAT
#endif
//==============================================================================
// juce_audio_processors flags:
#ifndef JUCE_PLUGINHOST_VST
//#define JUCE_PLUGINHOST_VST
#endif
#ifndef JUCE_PLUGINHOST_VST3
//#define JUCE_PLUGINHOST_VST3
#endif
#ifndef JUCE_PLUGINHOST_AU
//#define JUCE_PLUGINHOST_AU
#endif
//==============================================================================
// juce_core flags:
#ifndef JUCE_FORCE_DEBUG
//#define JUCE_FORCE_DEBUG
#endif
#ifndef JUCE_LOG_ASSERTIONS
//#define JUCE_LOG_ASSERTIONS
#endif
#ifndef JUCE_CHECK_MEMORY_LEAKS
//#define JUCE_CHECK_MEMORY_LEAKS
#endif
#ifndef JUCE_DONT_AUTOLINK_TO_WIN32_LIBRARIES
//#define JUCE_DONT_AUTOLINK_TO_WIN32_LIBRARIES
#endif
#ifndef JUCE_INCLUDE_ZLIB_CODE
//#define JUCE_INCLUDE_ZLIB_CODE
#endif
//==============================================================================
// juce_graphics flags:
#ifndef JUCE_USE_COREIMAGE_LOADER
//#define JUCE_USE_COREIMAGE_LOADER
#endif
#ifndef JUCE_USE_DIRECTWRITE
//#define JUCE_USE_DIRECTWRITE
#endif
//==============================================================================
// juce_gui_basics flags:
#ifndef JUCE_ENABLE_REPAINT_DEBUGGING
//#define JUCE_ENABLE_REPAINT_DEBUGGING
#endif
#ifndef JUCE_USE_XSHM
//#define JUCE_USE_XSHM
#endif
#ifndef JUCE_USE_XRENDER
//#define JUCE_USE_XRENDER
#endif
#ifndef JUCE_USE_XCURSOR
//#define JUCE_USE_XCURSOR
#endif
//==============================================================================
// juce_gui_extra flags:
#ifndef JUCE_WEB_BROWSER
//#define JUCE_WEB_BROWSER
#endif
#ifndef JUCE_ENABLE_LIVE_CONSTANT_EDITOR
//#define JUCE_ENABLE_LIVE_CONSTANT_EDITOR
#endif
#endif // __JUCE_APPCONFIG_CGCXPD__

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examples/SimpleFFTExample/JuceLibraryCode/JuceHeader.h Normal file
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/*
IMPORTANT! This file is auto-generated each time you save your
project - if you alter its contents, your changes may be overwritten!
This is the header file that your files should include in order to get all the
JUCE library headers. You should avoid including the JUCE headers directly in
your own source files, because that wouldn't pick up the correct configuration
options for your app.
*/
#ifndef __APPHEADERFILE_CGCXPD__
#define __APPHEADERFILE_CGCXPD__
#include "AppConfig.h"
#include "modules/juce_audio_basics/juce_audio_basics.h"
#include "modules/juce_audio_devices/juce_audio_devices.h"
#include "modules/juce_audio_formats/juce_audio_formats.h"
#include "modules/juce_audio_processors/juce_audio_processors.h"
#include "modules/juce_audio_utils/juce_audio_utils.h"
#include "modules/juce_core/juce_core.h"
#include "modules/juce_data_structures/juce_data_structures.h"
#include "modules/juce_events/juce_events.h"
#include "modules/juce_graphics/juce_graphics.h"
#include "modules/juce_gui_basics/juce_gui_basics.h"
#include "modules/juce_gui_extra/juce_gui_extra.h"
#if ! DONT_SET_USING_JUCE_NAMESPACE
// If your code uses a lot of JUCE classes, then this will obviously save you
// a lot of typing, but can be disabled by setting DONT_SET_USING_JUCE_NAMESPACE.
using namespace juce;
#endif
#if ! JUCE_DONT_DECLARE_PROJECTINFO
namespace ProjectInfo
{
const char* const projectName = "SimpleFFTExample";
const char* const versionString = "1.0.0";
const int versionNumber = 0x10000;
}
#endif
#endif // __APPHEADERFILE_CGCXPD__

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examples/SimpleFFTExample/JuceLibraryCode/ReadMe.txt Normal file
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Important Note!!
================
The purpose of this folder is to contain files that are auto-generated by the Introjucer,
and ALL files in this folder will be mercilessly DELETED and completely re-written whenever
the Introjucer saves your project.
Therefore, it's a bad idea to make any manual changes to the files in here, or to
put any of your own files in here if you don't want to lose them. (Of course you may choose
to add the folder's contents to your version-control system so that you can re-merge your own
modifications after the Introjucer has saved its changes).

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_audio_basics/juce_audio_basics.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_audio_basics/juce_audio_basics.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_audio_devices/juce_audio_devices.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_audio_devices/juce_audio_devices.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_audio_formats/juce_audio_formats.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_audio_formats/juce_audio_formats.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_audio_processors/juce_audio_processors.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_audio_processors/juce_audio_processors.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_audio_utils/juce_audio_utils.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_audio_utils/juce_audio_utils.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_core/juce_core.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_core/juce_core.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_data_structures/juce_data_structures.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_data_structures/juce_data_structures.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_events/juce_events.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_events/juce_events.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_graphics/juce_graphics.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_graphics/juce_graphics.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_gui_basics/juce_gui_basics.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_gui_basics/juce_gui_basics.h"

5
examples/SimpleFFTExample/JuceLibraryCode/modules/juce_gui_extra/juce_gui_extra.h Normal file
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// This is an auto-generated file to redirect any included
// module headers to the correct external folder.
#include "../../../../../modules/juce_gui_extra/juce_gui_extra.h"

71
examples/SimpleFFTExample/SimpleFFTExample.jucer Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<JUCERPROJECT id="cgcxPd" name="SimpleFFTExample" projectType="guiapp" version="1.0.0"
bundleIdentifier="com.yourcompany.SimpleFFTExample" includeBinaryInAppConfig="1"
jucerVersion="3.1.1">
<MAINGROUP id="rZCHr8" name="SimpleFFTExample">
<GROUP id="{8DC23B3F-98AC-AB1C-B26A-E693AF2DF0D2}" name="Source">
<FILE id="B1L62H" name="SpectrogramComponent.h" compile="0" resource="0"
file="Source/SpectrogramComponent.h"/>
<FILE id="uviznd" name="Main.cpp" compile="1" resource="0" file="Source/Main.cpp"/>
</GROUP>
</MAINGROUP>
<EXPORTFORMATS>
<XCODE_MAC targetFolder="Builds/MacOSX">
<CONFIGURATIONS>
<CONFIGURATION name="Debug" osxSDK="default" osxCompatibility="default" osxArchitecture="default"
isDebug="1" optimisation="1" targetName="SimpleFFTExample"/>
<CONFIGURATION name="Release" osxSDK="default" osxCompatibility="default" osxArchitecture="default"
isDebug="0" optimisation="3" targetName="SimpleFFTExample"/>
</CONFIGURATIONS>
<MODULEPATHS>
<MODULEPATH id="juce_core" path="../../modules"/>
<MODULEPATH id="juce_events" path="../../modules"/>
<MODULEPATH id="juce_graphics" path="../../modules"/>
<MODULEPATH id="juce_data_structures" path="../../modules"/>
<MODULEPATH id="juce_gui_basics" path="../../modules"/>
<MODULEPATH id="juce_gui_extra" path="../../modules"/>
<MODULEPATH id="juce_audio_basics" path="../../modules"/>
<MODULEPATH id="juce_audio_devices" path="../../modules"/>
<MODULEPATH id="juce_audio_formats" path="../../modules"/>
<MODULEPATH id="juce_audio_processors" path="../../modules"/>
<MODULEPATH id="juce_audio_utils" path="../../modules"/>
</MODULEPATHS>
</XCODE_MAC>
<VS2013 targetFolder="Builds/VisualStudio2013">
<CONFIGURATIONS>
<CONFIGURATION name="Debug" winWarningLevel="4" generateManifest="1" winArchitecture="32-bit"
isDebug="1" optimisation="1" targetName="SimpleFFTExample"/>
<CONFIGURATION name="Release" winWarningLevel="4" generateManifest="1" winArchitecture="32-bit"
isDebug="0" optimisation="3" targetName="SimpleFFTExample"/>
</CONFIGURATIONS>
<MODULEPATHS>
<MODULEPATH id="juce_gui_extra" path="../../modules"/>
<MODULEPATH id="juce_gui_basics" path="../../modules"/>
<MODULEPATH id="juce_graphics" path="../../modules"/>
<MODULEPATH id="juce_events" path="../../modules"/>
<MODULEPATH id="juce_data_structures" path="../../modules"/>
<MODULEPATH id="juce_core" path="../../modules"/>
<MODULEPATH id="juce_audio_utils" path="../../modules"/>
<MODULEPATH id="juce_audio_processors" path="../../modules"/>
<MODULEPATH id="juce_audio_formats" path="../../modules"/>
<MODULEPATH id="juce_audio_devices" path="../../modules"/>
<MODULEPATH id="juce_audio_basics" path="../../modules"/>
</MODULEPATHS>
</VS2013>
</EXPORTFORMATS>
<MODULES>
<MODULES id="juce_audio_basics" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_audio_devices" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_audio_formats" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_audio_processors" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_audio_utils" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_core" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_data_structures" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_events" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_graphics" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_gui_basics" showAllCode="1" useLocalCopy="0"/>
<MODULES id="juce_gui_extra" showAllCode="1" useLocalCopy="0"/>
</MODULES>
<JUCEOPTIONS/>
</JUCERPROJECT>

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examples/SimpleFFTExample/Source/Main.cpp Normal file
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/*
==============================================================================
JUCE demo code - use at your own risk!
==============================================================================
*/
#include "../JuceLibraryCode/JuceHeader.h"
#include "SpectrogramComponent.h"
//==============================================================================
class SimpleFFTExampleApplication : public JUCEApplication
{
public:
//==============================================================================
SimpleFFTExampleApplication() {}
const String getApplicationName() override { return ProjectInfo::projectName; }
const String getApplicationVersion() override { return ProjectInfo::versionString; }
bool moreThanOneInstanceAllowed() override { return true; }
//==============================================================================
void initialise (const String& /*commandLine*/) override
{
mainWindow = new MainWindow();
}
void shutdown() override
{
mainWindow = nullptr; // (deletes our window)
}
//==============================================================================
void systemRequestedQuit() override
{
// This is called when the app is being asked to quit: you can ignore this
// request and let the app carry on running, or call quit() to allow the app to close.
quit();
}
//==============================================================================
/*
This class implements the desktop window that contains an instance of
our MainContentComponent class.
*/
class MainWindow : public DocumentWindow
{
public:
MainWindow() : DocumentWindow (ProjectInfo::projectName,
Colours::lightgrey,
DocumentWindow::allButtons)
{
setUsingNativeTitleBar (true);
setContentOwned (new SpectrogramComponent(), true);
setResizable (true, true);
centreWithSize (getWidth(), getHeight());
setVisible (true);
}
void closeButtonPressed() override
{
// This is called when the user tries to close this window. Here, we'll just
// ask the app to quit when this happens, but you can change this to do
// whatever you need.
JUCEApplication::getInstance()->systemRequestedQuit();
}
private:
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MainWindow)
};
private:
ScopedPointer<MainWindow> mainWindow;
};
//==============================================================================
// This macro generates the main() routine that launches the app.
START_JUCE_APPLICATION (SimpleFFTExampleApplication)

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/*
==============================================================================
JUCE demo code - use at your own risk!
==============================================================================
*/
class SpectrogramComponent : public AudioAppComponent,
private Timer
{
public:
SpectrogramComponent()
: forwardFFT (fftOrder, false),
spectrogramImage (Image::RGB, 512, 512, true),
fifoIndex (0),
nextFFTBlockReady (false)
{
setOpaque (true);
setAudioChannels (2, 0); // we want a couple of input channels but no outputs
startTimerHz (60);
setSize (700, 500);
}
~SpectrogramComponent()
{
shutdownAudio();
}
//=======================================================================
void prepareToPlay (int /*samplesPerBlockExpected*/, double /*newSampleRate*/) override
{
// (nothing to do here)
}
void releaseResources() override
{
// (nothing to do here)
}
void getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill) override
{
if (bufferToFill.buffer->getNumChannels() > 0)
{
const float* channelData = bufferToFill.buffer->getWritePointer (0, bufferToFill.startSample);
for (int i = 0; i < bufferToFill.numSamples; ++i)
pushNextSampleIntoFifo (channelData[i]);
}
}
//=======================================================================
void paint (Graphics& g) override
{
g.fillAll (Colours::black);
g.setOpacity (1.0f);
g.drawImageWithin (spectrogramImage, 0, 0, getWidth(), getHeight(), RectanglePlacement::stretchToFit);
}
void timerCallback() override
{
if (nextFFTBlockReady)
{
drawNextLineOfSpectrogram();
nextFFTBlockReady = false;
repaint();
}
}
void pushNextSampleIntoFifo (float sample) noexcept
{
// if the fifo contains enough data, set a flag to say
// that the next line should now be rendered..
if (fifoIndex == fftSize)
{
if (! nextFFTBlockReady)
{
zeromem (fftData, sizeof (fftData));
memcpy (fftData, fifo, sizeof (fifo));
nextFFTBlockReady = true;
}
fifoIndex = 0;
}
fifo[fifoIndex++] = sample;
}
void drawNextLineOfSpectrogram()
{
const int rightHandEdge = spectrogramImage.getWidth() - 1;
const int imageHeight = spectrogramImage.getHeight();
// first, shuffle our image leftwards by 1 pixel..
spectrogramImage.moveImageSection (0, 0, 1, 0, rightHandEdge, imageHeight);
// then render our FFT data..
forwardFFT.performFrequencyOnlyForwardTransform (fftData);
// find the range of values produced, so we can scale our rendering to
// show up the detail clearly
Range<float> maxLevel = FloatVectorOperations::findMinAndMax (fftData, fftSize / 2);
for (int y = 0; y < imageHeight; ++y)
{
const float skewedProportionY = 1.0f - std::exp (std::log (y / (float) imageHeight) * 0.2f);
const int fftDataIndex = jlimit (0, fftSize / 2, (int) (skewedProportionY * fftSize / 2));
const float level = jmap (fftData[fftDataIndex], 0.0f, maxLevel.getEnd(), 0.0f, 1.0f);
spectrogramImage.setPixelAt (rightHandEdge, y, Colour::fromHSV (level, 1.0f, level, 1.0f));
}
}
enum
{
fftOrder = 10,
fftSize = 1 << fftOrder
};
private:
FFT forwardFFT;
Image spectrogramImage;
float fifo [fftSize];
float fftData [2 * fftSize];
int fifoIndex;
bool nextFFTBlockReady;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SpectrogramComponent)
};