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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">AudioThumbnail Class Reference</div> </div>
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<p>Makes it easy to quickly draw scaled views of the waveform shape of an audio file.
<a href="classAudioThumbnail.html#details">More...</a></p>
<div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
<img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for AudioThumbnail:</div>
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<img src="classAudioThumbnail.png" usemap="#AudioThumbnail_map" alt=""/>
<map id="AudioThumbnail_map" name="AudioThumbnail_map">
<area href="classAudioThumbnailBase.html" title="Provides a base for classes that can store and draw scaled views of an audio waveform. " alt="AudioThumbnailBase" shape="rect" coords="177,56,522,80"/>
<area href="classChangeBroadcaster.html" title="Holds a list of ChangeListeners, and sends messages to them when instructed. " alt="ChangeBroadcaster" shape="rect" coords="0,0,345,24"/>
<area href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html" alt="AudioFormatWriter::ThreadedWriter::IncomingDataReceiver" shape="rect" coords="355,0,700,24"/>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:abfa7516538eb0518cddeec4c71cf329d"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#abfa7516538eb0518cddeec4c71cf329d">AudioThumbnail</a> (int sourceSamplesPerThumbnailSample, <a class="el" href="classAudioFormatManager.html">AudioFormatManager</a> &formatManagerToUse, <a class="el" href="classAudioThumbnailCache.html">AudioThumbnailCache</a> &cacheToUse)</td></tr>
<tr class="memdesc:abfa7516538eb0518cddeec4c71cf329d"><td class="mdescLeft"> </td><td class="mdescRight">Creates an audio thumbnail. <a href="#abfa7516538eb0518cddeec4c71cf329d">More...</a><br /></td></tr>
<tr class="separator:abfa7516538eb0518cddeec4c71cf329d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac4e25d85982477ec205c5e968f16a56c"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#ac4e25d85982477ec205c5e968f16a56c">~AudioThumbnail</a> ()</td></tr>
<tr class="memdesc:ac4e25d85982477ec205c5e968f16a56c"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <a href="#ac4e25d85982477ec205c5e968f16a56c">More...</a><br /></td></tr>
<tr class="separator:ac4e25d85982477ec205c5e968f16a56c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3b5a0fab0c544023b734b545ae15e22a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a3b5a0fab0c544023b734b545ae15e22a">clear</a> () override</td></tr>
<tr class="memdesc:a3b5a0fab0c544023b734b545ae15e22a"><td class="mdescLeft"> </td><td class="mdescRight">Clears and resets the thumbnail. <a href="#a3b5a0fab0c544023b734b545ae15e22a">More...</a><br /></td></tr>
<tr class="separator:a3b5a0fab0c544023b734b545ae15e22a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1c10b38a794d96b2d26acbbc15946319"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a1c10b38a794d96b2d26acbbc15946319">setSource</a> (<a class="el" href="classInputSource.html">InputSource</a> *newSource) override</td></tr>
<tr class="memdesc:a1c10b38a794d96b2d26acbbc15946319"><td class="mdescLeft"> </td><td class="mdescRight">Specifies the file or stream that contains the audio file. <a href="#a1c10b38a794d96b2d26acbbc15946319">More...</a><br /></td></tr>
<tr class="separator:a1c10b38a794d96b2d26acbbc15946319"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a67fb7eb4571c0442789b34139dfb47f9"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a67fb7eb4571c0442789b34139dfb47f9">setReader</a> (<a class="el" href="classAudioFormatReader.html">AudioFormatReader</a> *newReader, <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> hashCode) override</td></tr>
<tr class="memdesc:a67fb7eb4571c0442789b34139dfb47f9"><td class="mdescLeft"> </td><td class="mdescRight">Gives the thumbnail an <a class="el" href="classAudioFormatReader.html" title="Reads samples from an audio file stream. ">AudioFormatReader</a> to use directly. <a href="#a67fb7eb4571c0442789b34139dfb47f9">More...</a><br /></td></tr>
<tr class="separator:a67fb7eb4571c0442789b34139dfb47f9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9a99b62ab38df9acf50ce84e9488bf6e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a9a99b62ab38df9acf50ce84e9488bf6e">reset</a> (int numChannels, double sampleRate, <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> totalSamplesInSource=0) override</td></tr>
<tr class="memdesc:a9a99b62ab38df9acf50ce84e9488bf6e"><td class="mdescLeft"> </td><td class="mdescRight">Resets the thumbnail, ready for adding data with the specified format. <a href="#a9a99b62ab38df9acf50ce84e9488bf6e">More...</a><br /></td></tr>
<tr class="separator:a9a99b62ab38df9acf50ce84e9488bf6e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acc6b12d4f8d8074dfd76398e775eeb90"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#acc6b12d4f8d8074dfd76398e775eeb90">addBlock</a> (<a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> sampleNumberInSource, const <a class="el" href="juce__AudioSampleBuffer_8h.html#a97a2916214efbd76c6b870f9c48efba0">AudioSampleBuffer</a> &newData, int startOffsetInBuffer, int numSamples) override</td></tr>
<tr class="memdesc:acc6b12d4f8d8074dfd76398e775eeb90"><td class="mdescLeft"> </td><td class="mdescRight">Adds a block of level data to the thumbnail. <a href="#acc6b12d4f8d8074dfd76398e775eeb90">More...</a><br /></td></tr>
<tr class="separator:acc6b12d4f8d8074dfd76398e775eeb90"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa0f585f827cda690c98264045be8d1b7"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#aa0f585f827cda690c98264045be8d1b7">loadFrom</a> (<a class="el" href="classInputStream.html">InputStream</a> &input) override</td></tr>
<tr class="memdesc:aa0f585f827cda690c98264045be8d1b7"><td class="mdescLeft"> </td><td class="mdescRight">Reloads the low res thumbnail data from an input stream. <a href="#aa0f585f827cda690c98264045be8d1b7">More...</a><br /></td></tr>
<tr class="separator:aa0f585f827cda690c98264045be8d1b7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac3535275e40a4414ef1081fcecbf814e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#ac3535275e40a4414ef1081fcecbf814e">saveTo</a> (<a class="el" href="classOutputStream.html">OutputStream</a> &output) const override</td></tr>
<tr class="memdesc:ac3535275e40a4414ef1081fcecbf814e"><td class="mdescLeft"> </td><td class="mdescRight">Saves the low res thumbnail data to an output stream. <a href="#ac3535275e40a4414ef1081fcecbf814e">More...</a><br /></td></tr>
<tr class="separator:ac3535275e40a4414ef1081fcecbf814e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a77ca661abaa7f1321c0cb2737578cd70"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a77ca661abaa7f1321c0cb2737578cd70">getNumChannels</a> () const noexcept override</td></tr>
<tr class="memdesc:a77ca661abaa7f1321c0cb2737578cd70"><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of channels in the file. <a href="#a77ca661abaa7f1321c0cb2737578cd70">More...</a><br /></td></tr>
<tr class="separator:a77ca661abaa7f1321c0cb2737578cd70"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a76892e0159356999dfe317fa1c5e044b"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a76892e0159356999dfe317fa1c5e044b">getTotalLength</a> () const noexcept override</td></tr>
<tr class="memdesc:a76892e0159356999dfe317fa1c5e044b"><td class="mdescLeft"> </td><td class="mdescRight">Returns the length of the audio file, in seconds. <a href="#a76892e0159356999dfe317fa1c5e044b">More...</a><br /></td></tr>
<tr class="separator:a76892e0159356999dfe317fa1c5e044b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab9b136a4b025b6a0f283cef57c61b893"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#ab9b136a4b025b6a0f283cef57c61b893">drawChannel</a> (<a class="el" href="classGraphics.html">Graphics</a> &g, const <a class="el" href="classRectangle.html">Rectangle</a>< int > &area, double startTimeSeconds, double endTimeSeconds, int channelNum, float verticalZoomFactor) override</td></tr>
<tr class="memdesc:ab9b136a4b025b6a0f283cef57c61b893"><td class="mdescLeft"> </td><td class="mdescRight">Draws the waveform for a channel. <a href="#ab9b136a4b025b6a0f283cef57c61b893">More...</a><br /></td></tr>
<tr class="separator:ab9b136a4b025b6a0f283cef57c61b893"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8fc354b03e88e66771ef3b9647fdd9fa"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a8fc354b03e88e66771ef3b9647fdd9fa">drawChannels</a> (<a class="el" href="classGraphics.html">Graphics</a> &g, const <a class="el" href="classRectangle.html">Rectangle</a>< int > &area, double startTimeSeconds, double endTimeSeconds, float verticalZoomFactor) override</td></tr>
<tr class="memdesc:a8fc354b03e88e66771ef3b9647fdd9fa"><td class="mdescLeft"> </td><td class="mdescRight">Draws the waveforms for all channels in the thumbnail. <a href="#a8fc354b03e88e66771ef3b9647fdd9fa">More...</a><br /></td></tr>
<tr class="separator:a8fc354b03e88e66771ef3b9647fdd9fa"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a37850d03f49e57a15487d493505fbe2c"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a37850d03f49e57a15487d493505fbe2c">isFullyLoaded</a> () const noexcept override</td></tr>
<tr class="memdesc:a37850d03f49e57a15487d493505fbe2c"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if the low res preview is fully generated. <a href="#a37850d03f49e57a15487d493505fbe2c">More...</a><br /></td></tr>
<tr class="separator:a37850d03f49e57a15487d493505fbe2c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a054d995aa7d9765b695a642bb250ff12"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a054d995aa7d9765b695a642bb250ff12">getProportionComplete</a> () const noexcept</td></tr>
<tr class="memdesc:a054d995aa7d9765b695a642bb250ff12"><td class="mdescLeft"> </td><td class="mdescRight">Returns a value between 0 and 1 to indicate the progress towards loading the entire file. <a href="#a054d995aa7d9765b695a642bb250ff12">More...</a><br /></td></tr>
<tr class="separator:a054d995aa7d9765b695a642bb250ff12"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8992480a29946f7c629bc250a208e8ea"><td class="memItemLeft" align="right" valign="top"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a8992480a29946f7c629bc250a208e8ea">getNumSamplesFinished</a> () const noexcept override</td></tr>
<tr class="memdesc:a8992480a29946f7c629bc250a208e8ea"><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of samples that have been set in the thumbnail. <a href="#a8992480a29946f7c629bc250a208e8ea">More...</a><br /></td></tr>
<tr class="separator:a8992480a29946f7c629bc250a208e8ea"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a53a867a5d46790deb5135a24cfcf85c6"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a53a867a5d46790deb5135a24cfcf85c6">getApproximatePeak</a> () const override</td></tr>
<tr class="memdesc:a53a867a5d46790deb5135a24cfcf85c6"><td class="mdescLeft"> </td><td class="mdescRight">Returns the highest level in the thumbnail. <a href="#a53a867a5d46790deb5135a24cfcf85c6">More...</a><br /></td></tr>
<tr class="separator:a53a867a5d46790deb5135a24cfcf85c6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a84a4d6ab047f3880691ba8f70f747b3f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a84a4d6ab047f3880691ba8f70f747b3f">getApproximateMinMax</a> (double startTime, double endTime, int channelIndex, float &minValue, float &maxValue) const noexcept override</td></tr>
<tr class="memdesc:a84a4d6ab047f3880691ba8f70f747b3f"><td class="mdescLeft"> </td><td class="mdescRight">Reads the approximate min and max levels from a section of the thumbnail. <a href="#a84a4d6ab047f3880691ba8f70f747b3f">More...</a><br /></td></tr>
<tr class="separator:a84a4d6ab047f3880691ba8f70f747b3f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a943ab9611f881a53106c002effe280a4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnail.html#a943ab9611f881a53106c002effe280a4">getHashCode</a> () const override</td></tr>
<tr class="memdesc:a943ab9611f881a53106c002effe280a4"><td class="mdescLeft"> </td><td class="mdescRight">Returns the hash code that was set by <a class="el" href="classAudioThumbnail.html#a1c10b38a794d96b2d26acbbc15946319" title="Specifies the file or stream that contains the audio file. ">setSource()</a> or <a class="el" href="classAudioThumbnail.html#a67fb7eb4571c0442789b34139dfb47f9" title="Gives the thumbnail an AudioFormatReader to use directly. ">setReader()</a>. <a href="#a943ab9611f881a53106c002effe280a4">More...</a><br /></td></tr>
<tr class="separator:a943ab9611f881a53106c002effe280a4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classAudioThumbnailBase"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classAudioThumbnailBase')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classAudioThumbnailBase.html">AudioThumbnailBase</a></td></tr>
<tr class="memitem:af7b4ebde2996de4bed6e1cf048b11467 inherit pub_methods_classAudioThumbnailBase"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#af7b4ebde2996de4bed6e1cf048b11467">AudioThumbnailBase</a> ()</td></tr>
<tr class="separator:af7b4ebde2996de4bed6e1cf048b11467 inherit pub_methods_classAudioThumbnailBase"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2ef25f2c29e6363e346c2cb819e7a5b6 inherit pub_methods_classAudioThumbnailBase"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a2ef25f2c29e6363e346c2cb819e7a5b6">~AudioThumbnailBase</a> ()</td></tr>
<tr class="separator:a2ef25f2c29e6363e346c2cb819e7a5b6 inherit pub_methods_classAudioThumbnailBase"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classChangeBroadcaster"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classChangeBroadcaster')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classChangeBroadcaster.html">ChangeBroadcaster</a></td></tr>
<tr class="memitem:a1c8ccfa186a47d58a05e7f1f1576c038 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a1c8ccfa186a47d58a05e7f1f1576c038">ChangeBroadcaster</a> () noexcept</td></tr>
<tr class="memdesc:a1c8ccfa186a47d58a05e7f1f1576c038 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Creates an <a class="el" href="classChangeBroadcaster.html" title="Holds a list of ChangeListeners, and sends messages to them when instructed. ">ChangeBroadcaster</a>. <a href="classChangeBroadcaster.html#a1c8ccfa186a47d58a05e7f1f1576c038">More...</a><br /></td></tr>
<tr class="separator:a1c8ccfa186a47d58a05e7f1f1576c038 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3b2f8465cc6c09c0583c8bdf56319742 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a3b2f8465cc6c09c0583c8bdf56319742">~ChangeBroadcaster</a> ()</td></tr>
<tr class="memdesc:a3b2f8465cc6c09c0583c8bdf56319742 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <a href="classChangeBroadcaster.html#a3b2f8465cc6c09c0583c8bdf56319742">More...</a><br /></td></tr>
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<tr class="memitem:ad68416fe79a94cd5c99519bdea6c2a06 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#ad68416fe79a94cd5c99519bdea6c2a06">addChangeListener</a> (<a class="el" href="classChangeListener.html">ChangeListener</a> *listener)</td></tr>
<tr class="memdesc:ad68416fe79a94cd5c99519bdea6c2a06 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Registers a listener to receive change callbacks from this broadcaster. <a href="classChangeBroadcaster.html#ad68416fe79a94cd5c99519bdea6c2a06">More...</a><br /></td></tr>
<tr class="separator:ad68416fe79a94cd5c99519bdea6c2a06 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae558a26c795278549a63e342bd5f1650 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#ae558a26c795278549a63e342bd5f1650">removeChangeListener</a> (<a class="el" href="classChangeListener.html">ChangeListener</a> *listener)</td></tr>
<tr class="memdesc:ae558a26c795278549a63e342bd5f1650 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Unregisters a listener from the list. <a href="classChangeBroadcaster.html#ae558a26c795278549a63e342bd5f1650">More...</a><br /></td></tr>
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<tr class="memitem:a6b9c150078318d419debc82e6f22ce58 inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a6b9c150078318d419debc82e6f22ce58">removeAllChangeListeners</a> ()</td></tr>
<tr class="memdesc:a6b9c150078318d419debc82e6f22ce58 inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Removes all listeners from the list. <a href="classChangeBroadcaster.html#a6b9c150078318d419debc82e6f22ce58">More...</a><br /></td></tr>
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<tr class="memitem:a10f01d1c0a7fde85355321985a682cbd inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a10f01d1c0a7fde85355321985a682cbd">sendChangeMessage</a> ()</td></tr>
<tr class="memdesc:a10f01d1c0a7fde85355321985a682cbd inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Causes an asynchronous change message to be sent to all the registered listeners. <a href="classChangeBroadcaster.html#a10f01d1c0a7fde85355321985a682cbd">More...</a><br /></td></tr>
<tr class="separator:a10f01d1c0a7fde85355321985a682cbd inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5d16cd01b9af4bacb1716530af17f77b inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a5d16cd01b9af4bacb1716530af17f77b">sendSynchronousChangeMessage</a> ()</td></tr>
<tr class="memdesc:a5d16cd01b9af4bacb1716530af17f77b inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">Sends a synchronous change message to all the registered listeners. <a href="classChangeBroadcaster.html#a5d16cd01b9af4bacb1716530af17f77b">More...</a><br /></td></tr>
<tr class="separator:a5d16cd01b9af4bacb1716530af17f77b inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a78f62ecd57a016f8ba7a6ce55454947d inherit pub_methods_classChangeBroadcaster"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classChangeBroadcaster.html#a78f62ecd57a016f8ba7a6ce55454947d">dispatchPendingMessages</a> ()</td></tr>
<tr class="memdesc:a78f62ecd57a016f8ba7a6ce55454947d inherit pub_methods_classChangeBroadcaster"><td class="mdescLeft"> </td><td class="mdescRight">If a change message has been sent but not yet dispatched, this will call <a class="el" href="classChangeBroadcaster.html#a5d16cd01b9af4bacb1716530af17f77b" title="Sends a synchronous change message to all the registered listeners. ">sendSynchronousChangeMessage()</a> to make the callback immediately. <a href="classChangeBroadcaster.html#a78f62ecd57a016f8ba7a6ce55454947d">More...</a><br /></td></tr>
<tr class="separator:a78f62ecd57a016f8ba7a6ce55454947d inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html">AudioFormatWriter::ThreadedWriter::IncomingDataReceiver</a></td></tr>
<tr class="memitem:a27d5ea6fc6910944fc7351e058af4450 inherit pub_methods_classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html#a27d5ea6fc6910944fc7351e058af4450">IncomingDataReceiver</a> ()</td></tr>
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<tr class="memitem:a0728c19886518197e280cc5318197295 inherit pub_methods_classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html#a0728c19886518197e280cc5318197295">~IncomingDataReceiver</a> ()</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Makes it easy to quickly draw scaled views of the waveform shape of an audio file. </p>
<p>To use this class, just create an AudioThumbNail class for the file you want to draw, call setSource to tell it which file or resource to use, then call <a class="el" href="classAudioThumbnail.html#ab9b136a4b025b6a0f283cef57c61b893" title="Draws the waveform for a channel. ">drawChannel()</a> to draw it.</p>
<p>The class will asynchronously scan the wavefile to create its scaled-down view, so you should make your UI repaint itself as this data comes in. To do this, the <a class="el" href="classAudioThumbnail.html" title="Makes it easy to quickly draw scaled views of the waveform shape of an audio file. ">AudioThumbnail</a> is a <a class="el" href="classChangeBroadcaster.html" title="Holds a list of ChangeListeners, and sends messages to them when instructed. ">ChangeBroadcaster</a>, and will broadcast a message when its listeners should repaint themselves.</p>
<p>The thumbnail stores an internal low-res version of the wave data, and this can be loaded and saved to avoid having to scan the file again.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioThumbnailCache.html" title="An instance of this class is used to manage multiple AudioThumbnail objects. ">AudioThumbnailCache</a>, <a class="el" href="classAudioThumbnailBase.html" title="Provides a base for classes that can store and draw scaled views of an audio waveform. ">AudioThumbnailBase</a> </dd></dl>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#abfa7516538eb0518cddeec4c71cf329d">§ </a></span>AudioThumbnail()</h2>
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<td class="paramtype"><a class="el" href="classAudioFormatManager.html">AudioFormatManager</a> & </td>
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<td class="paramtype"><a class="el" href="classAudioThumbnailCache.html">AudioThumbnailCache</a> & </td>
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<p>Creates an audio thumbnail. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">sourceSamplesPerThumbnailSample</td><td>when creating a stored, low-res version of the audio data, this is the scale at which it should be done. (This number is the number of original samples that will be averaged for each low-res sample) </td></tr>
<tr><td class="paramname">formatManagerToUse</td><td>the audio format manager that is used to open the file </td></tr>
<tr><td class="paramname">cacheToUse</td><td>an instance of an <a class="el" href="classAudioThumbnailCache.html" title="An instance of this class is used to manage multiple AudioThumbnail objects. ">AudioThumbnailCache</a> - this provides a background thread and storage that is used to by the thumbnail, and the cache object can be shared between multiple thumbnails </td></tr>
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<h2 class="memtitle"><span class="permalink"><a href="#ac4e25d85982477ec205c5e968f16a56c">§ </a></span>~AudioThumbnail()</h2>
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<td class="memname">AudioThumbnail::~AudioThumbnail </td>
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<p>Destructor. </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a3b5a0fab0c544023b734b545ae15e22a">§ </a></span>clear()</h2>
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<td class="memname">void AudioThumbnail::clear </td>
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<p>Clears and resets the thumbnail. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a53a5be624c9de79a672777d3697cfd48">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1c10b38a794d96b2d26acbbc15946319">§ </a></span>setSource()</h2>
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<td class="memname">bool AudioThumbnail::setSource </td>
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<td class="paramtype"><a class="el" href="classInputSource.html">InputSource</a> * </td>
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<p>Specifies the file or stream that contains the audio file. </p>
<p>For a file, just call </p><div class="fragment"><div class="line"><a class="code" href="classAudioThumbnail.html#a1c10b38a794d96b2d26acbbc15946319">setSource</a> (<span class="keyword">new</span> <a class="code" href="classFileInputSource.html">FileInputSource</a> (file))</div></div><!-- fragment --><p>You can pass a nullptr in here to clear the thumbnail. The source that is passed in will be deleted by this object when it is no longer needed. </p><dl class="section return"><dt>Returns</dt><dd>true if the source could be opened as a valid audio file, false if this failed for some reason. </dd></dl>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a8fd77ac3757e9eca141ab1cbc4e7d269">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a67fb7eb4571c0442789b34139dfb47f9">§ </a></span>setReader()</h2>
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<td class="paramtype"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </td>
<td class="paramname"><em>hashCode</em> </td>
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<p>Gives the thumbnail an <a class="el" href="classAudioFormatReader.html" title="Reads samples from an audio file stream. ">AudioFormatReader</a> to use directly. </p>
<p>This will start parsing the audio in a background thread (unless the hash code can be looked-up successfully in the thumbnail cache). Note that the reader object will be held by the thumbnail and deleted later when no longer needed. The thumbnail will actually keep hold of this reader until you clear the thumbnail or change the input source, so the file will be held open for all this time. If you don't want the thumbnail to keep a file handle open continuously, you should use the <a class="el" href="classAudioThumbnail.html#a1c10b38a794d96b2d26acbbc15946319" title="Specifies the file or stream that contains the audio file. ">setSource()</a> method instead, which will only open the file when it needs to. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#ad6960274ea876808fd2e6df6f0761e9c">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9a99b62ab38df9acf50ce84e9488bf6e">§ </a></span>reset()</h2>
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<p>Resets the thumbnail, ready for adding data with the specified format. </p>
<p>If you're going to generate a thumbnail yourself, call this before using <a class="el" href="classAudioThumbnail.html#acc6b12d4f8d8074dfd76398e775eeb90" title="Adds a block of level data to the thumbnail. ">addBlock()</a> to add the data. </p>
<p>Implements <a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html#a48e39e836142669e489b04389123536a">AudioFormatWriter::ThreadedWriter::IncomingDataReceiver</a>.</p>
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<td class="paramtype"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </td>
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<td class="paramtype">const <a class="el" href="juce__AudioSampleBuffer_8h.html#a97a2916214efbd76c6b870f9c48efba0">AudioSampleBuffer</a> & </td>
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<p>Adds a block of level data to the thumbnail. </p>
<p>Call <a class="el" href="classAudioThumbnail.html#a9a99b62ab38df9acf50ce84e9488bf6e" title="Resets the thumbnail, ready for adding data with the specified format. ">reset()</a> before using this, to tell the thumbnail about the data format. </p>
<p>Implements <a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html#aa4fbc037fadc84e796c5840fdf920063">AudioFormatWriter::ThreadedWriter::IncomingDataReceiver</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa0f585f827cda690c98264045be8d1b7">§ </a></span>loadFrom()</h2>
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<td class="memname">bool AudioThumbnail::loadFrom </td>
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<p>Reloads the low res thumbnail data from an input stream. </p>
<p>This is not an audio file stream! It takes a stream of thumbnail data that would previously have been created by the <a class="el" href="classAudioThumbnail.html#ac3535275e40a4414ef1081fcecbf814e" title="Saves the low res thumbnail data to an output stream. ">saveTo()</a> method. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioThumbnail.html#ac3535275e40a4414ef1081fcecbf814e" title="Saves the low res thumbnail data to an output stream. ">saveTo</a> </dd></dl>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a84319e0027a1d0b98a38b51c00fa2d5c">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac3535275e40a4414ef1081fcecbf814e">§ </a></span>saveTo()</h2>
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<td class="memname">void AudioThumbnail::saveTo </td>
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<p>Saves the low res thumbnail data to an output stream. </p>
<p>The data that is written can later be reloaded using <a class="el" href="classAudioThumbnail.html#aa0f585f827cda690c98264045be8d1b7" title="Reloads the low res thumbnail data from an input stream. ">loadFrom()</a>. </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioThumbnail.html#aa0f585f827cda690c98264045be8d1b7" title="Reloads the low res thumbnail data from an input stream. ">loadFrom</a> </dd></dl>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a9cb4b72aa47359c671f89fc25eae0a72">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a77ca661abaa7f1321c0cb2737578cd70">§ </a></span>getNumChannels()</h2>
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<td class="memname">int AudioThumbnail::getNumChannels </td>
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<p>Returns the number of channels in the file. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a6677b1ec042a69aa14ceec756d292671">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a76892e0159356999dfe317fa1c5e044b">§ </a></span>getTotalLength()</h2>
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<td class="memname">double AudioThumbnail::getTotalLength </td>
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<p>Returns the length of the audio file, in seconds. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#aa668e0939708049e4ee3b203860037c9">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab9b136a4b025b6a0f283cef57c61b893">§ </a></span>drawChannel()</h2>
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<td class="memname">void AudioThumbnail::drawChannel </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>endTimeSeconds</em>, </td>
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<p>Draws the waveform for a channel. </p>
<p>The waveform will be drawn within the specified rectangle, where startTime and endTime specify the times within the audio file that should be positioned at the left and right edges of the rectangle.</p>
<p>The waveform will be scaled vertically so that a full-volume sample will fill the rectangle vertically, but you can also specify an extra vertical scale factor with the verticalZoomFactor parameter. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#ab7e4df6d6c5e96943f3f6ca184235a57">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8fc354b03e88e66771ef3b9647fdd9fa">§ </a></span>drawChannels()</h2>
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<td class="memname">void AudioThumbnail::drawChannels </td>
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<p>Draws the waveforms for all channels in the thumbnail. </p>
<p>This will call <a class="el" href="classAudioThumbnail.html#ab9b136a4b025b6a0f283cef57c61b893" title="Draws the waveform for a channel. ">drawChannel()</a> to render each of the thumbnail's channels, stacked above each other within the specified area.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classAudioThumbnail.html#ab9b136a4b025b6a0f283cef57c61b893" title="Draws the waveform for a channel. ">drawChannel</a> </dd></dl>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a7779a08868bbb6581acb904f200c7877">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a37850d03f49e57a15487d493505fbe2c">§ </a></span>isFullyLoaded()</h2>
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<p>Returns true if the low res preview is fully generated. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#aacffa9ccff66765ea16fad7aca98323e">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a054d995aa7d9765b695a642bb250ff12">§ </a></span>getProportionComplete()</h2>
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<p>Returns a value between 0 and 1 to indicate the progress towards loading the entire file. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8992480a29946f7c629bc250a208e8ea">§ </a></span>getNumSamplesFinished()</h2>
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<td class="memname"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> AudioThumbnail::getNumSamplesFinished </td>
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<p>Returns the number of samples that have been set in the thumbnail. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#ad04c3c2c5a003df0296faab4f017081f">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a53a867a5d46790deb5135a24cfcf85c6">§ </a></span>getApproximatePeak()</h2>
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<td class="memname">float AudioThumbnail::getApproximatePeak </td>
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<p>Returns the highest level in the thumbnail. </p>
<p>Note that because the thumb only stores low-resolution data, this isn't an accurate representation of the highest value, it's only a rough approximation. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a8efca4beb3d0f32b65be53be933a8e81">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a84a4d6ab047f3880691ba8f70f747b3f">§ </a></span>getApproximateMinMax()</h2>
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<td class="memname">void AudioThumbnail::getApproximateMinMax </td>
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<p>Reads the approximate min and max levels from a section of the thumbnail. </p>
<p>The lowest and highest samples are returned in minValue and maxValue, but obviously because the thumb only stores low-resolution data, these numbers will only be a rough approximation of the true values. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#ab3abc860ff8e4fda8234b54cbec3d137">AudioThumbnailBase</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a943ab9611f881a53106c002effe280a4">§ </a></span>getHashCode()</h2>
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<td class="memname"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> AudioThumbnail::getHashCode </td>
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<p>Returns the hash code that was set by <a class="el" href="classAudioThumbnail.html#a1c10b38a794d96b2d26acbbc15946319" title="Specifies the file or stream that contains the audio file. ">setSource()</a> or <a class="el" href="classAudioThumbnail.html#a67fb7eb4571c0442789b34139dfb47f9" title="Gives the thumbnail an AudioFormatReader to use directly. ">setReader()</a>. </p>
<p>Implements <a class="el" href="classAudioThumbnailBase.html#a9a16ffaf872861903fdf2e97fcfe958f">AudioThumbnailBase</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="juce__AudioThumbnail_8h.html">juce_AudioThumbnail.h</a></li>
</ul>
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