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<a href="#pub-methods">Public Member Functions</a> |
<a href="classAudioThumbnailBase-members.html">List of all members</a> </div>
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<div class="title">AudioThumbnailBase Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Provides a base for classes that can store and draw scaled views of an audio waveform.
<a href="classAudioThumbnailBase.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 AudioThumbnailBase:</div>
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<img src="classAudioThumbnailBase.png" usemap="#AudioThumbnailBase_map" alt=""/>
<map id="AudioThumbnailBase_map" name="AudioThumbnailBase_map">
<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"/>
<area href="classAudioThumbnail.html" title="Makes it easy to quickly draw scaled views of the waveform shape of an audio file. " alt="AudioThumbnail" shape="rect" coords="177,112,522,136"/>
</map>
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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:af7b4ebde2996de4bed6e1cf048b11467"><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"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2ef25f2c29e6363e346c2cb819e7a5b6"><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"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a53a5be624c9de79a672777d3697cfd48"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a53a5be624c9de79a672777d3697cfd48">clear</a> ()=0</td></tr>
<tr class="memdesc:a53a5be624c9de79a672777d3697cfd48"><td class="mdescLeft"> </td><td class="mdescRight">Clears and resets the thumbnail. <a href="#a53a5be624c9de79a672777d3697cfd48">More...</a><br /></td></tr>
<tr class="separator:a53a5be624c9de79a672777d3697cfd48"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8fd77ac3757e9eca141ab1cbc4e7d269"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a8fd77ac3757e9eca141ab1cbc4e7d269">setSource</a> (<a class="el" href="classInputSource.html">InputSource</a> *newSource)=0</td></tr>
<tr class="memdesc:a8fd77ac3757e9eca141ab1cbc4e7d269"><td class="mdescLeft"> </td><td class="mdescRight">Specifies the file or stream that contains the audio file. <a href="#a8fd77ac3757e9eca141ab1cbc4e7d269">More...</a><br /></td></tr>
<tr class="separator:a8fd77ac3757e9eca141ab1cbc4e7d269"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad6960274ea876808fd2e6df6f0761e9c"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#ad6960274ea876808fd2e6df6f0761e9c">setReader</a> (<a class="el" href="classAudioFormatReader.html">AudioFormatReader</a> *newReader, <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> hashCode)=0</td></tr>
<tr class="memdesc:ad6960274ea876808fd2e6df6f0761e9c"><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="#ad6960274ea876808fd2e6df6f0761e9c">More...</a><br /></td></tr>
<tr class="separator:ad6960274ea876808fd2e6df6f0761e9c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a84319e0027a1d0b98a38b51c00fa2d5c"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a84319e0027a1d0b98a38b51c00fa2d5c">loadFrom</a> (<a class="el" href="classInputStream.html">InputStream</a> &input)=0</td></tr>
<tr class="memdesc:a84319e0027a1d0b98a38b51c00fa2d5c"><td class="mdescLeft"> </td><td class="mdescRight">Reloads the low res thumbnail data from an input stream. <a href="#a84319e0027a1d0b98a38b51c00fa2d5c">More...</a><br /></td></tr>
<tr class="separator:a84319e0027a1d0b98a38b51c00fa2d5c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9cb4b72aa47359c671f89fc25eae0a72"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a9cb4b72aa47359c671f89fc25eae0a72">saveTo</a> (<a class="el" href="classOutputStream.html">OutputStream</a> &output) const =0</td></tr>
<tr class="memdesc:a9cb4b72aa47359c671f89fc25eae0a72"><td class="mdescLeft"> </td><td class="mdescRight">Saves the low res thumbnail data to an output stream. <a href="#a9cb4b72aa47359c671f89fc25eae0a72">More...</a><br /></td></tr>
<tr class="separator:a9cb4b72aa47359c671f89fc25eae0a72"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6677b1ec042a69aa14ceec756d292671"><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a6677b1ec042a69aa14ceec756d292671">getNumChannels</a> () const noexcept=0</td></tr>
<tr class="memdesc:a6677b1ec042a69aa14ceec756d292671"><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of channels in the file. <a href="#a6677b1ec042a69aa14ceec756d292671">More...</a><br /></td></tr>
<tr class="separator:a6677b1ec042a69aa14ceec756d292671"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa668e0939708049e4ee3b203860037c9"><td class="memItemLeft" align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#aa668e0939708049e4ee3b203860037c9">getTotalLength</a> () const noexcept=0</td></tr>
<tr class="memdesc:aa668e0939708049e4ee3b203860037c9"><td class="mdescLeft"> </td><td class="mdescRight">Returns the length of the audio file, in seconds. <a href="#aa668e0939708049e4ee3b203860037c9">More...</a><br /></td></tr>
<tr class="separator:aa668e0939708049e4ee3b203860037c9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab7e4df6d6c5e96943f3f6ca184235a57"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#ab7e4df6d6c5e96943f3f6ca184235a57">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)=0</td></tr>
<tr class="memdesc:ab7e4df6d6c5e96943f3f6ca184235a57"><td class="mdescLeft"> </td><td class="mdescRight">Draws the waveform for a channel. <a href="#ab7e4df6d6c5e96943f3f6ca184235a57">More...</a><br /></td></tr>
<tr class="separator:ab7e4df6d6c5e96943f3f6ca184235a57"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7779a08868bbb6581acb904f200c7877"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a7779a08868bbb6581acb904f200c7877">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)=0</td></tr>
<tr class="memdesc:a7779a08868bbb6581acb904f200c7877"><td class="mdescLeft"> </td><td class="mdescRight">Draws the waveforms for all channels in the thumbnail. <a href="#a7779a08868bbb6581acb904f200c7877">More...</a><br /></td></tr>
<tr class="separator:a7779a08868bbb6581acb904f200c7877"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aacffa9ccff66765ea16fad7aca98323e"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#aacffa9ccff66765ea16fad7aca98323e">isFullyLoaded</a> () const noexcept=0</td></tr>
<tr class="memdesc:aacffa9ccff66765ea16fad7aca98323e"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if the low res preview is fully generated. <a href="#aacffa9ccff66765ea16fad7aca98323e">More...</a><br /></td></tr>
<tr class="separator:aacffa9ccff66765ea16fad7aca98323e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad04c3c2c5a003df0296faab4f017081f"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#ad04c3c2c5a003df0296faab4f017081f">getNumSamplesFinished</a> () const noexcept=0</td></tr>
<tr class="memdesc:ad04c3c2c5a003df0296faab4f017081f"><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of samples that have been set in the thumbnail. <a href="#ad04c3c2c5a003df0296faab4f017081f">More...</a><br /></td></tr>
<tr class="separator:ad04c3c2c5a003df0296faab4f017081f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8efca4beb3d0f32b65be53be933a8e81"><td class="memItemLeft" align="right" valign="top">virtual float </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a8efca4beb3d0f32b65be53be933a8e81">getApproximatePeak</a> () const =0</td></tr>
<tr class="memdesc:a8efca4beb3d0f32b65be53be933a8e81"><td class="mdescLeft"> </td><td class="mdescRight">Returns the highest level in the thumbnail. <a href="#a8efca4beb3d0f32b65be53be933a8e81">More...</a><br /></td></tr>
<tr class="separator:a8efca4beb3d0f32b65be53be933a8e81"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab3abc860ff8e4fda8234b54cbec3d137"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#ab3abc860ff8e4fda8234b54cbec3d137">getApproximateMinMax</a> (double startTime, double endTime, int channelIndex, float &minValue, float &maxValue) const noexcept=0</td></tr>
<tr class="memdesc:ab3abc860ff8e4fda8234b54cbec3d137"><td class="mdescLeft"> </td><td class="mdescRight">Reads the approximate min and max levels from a section of the thumbnail. <a href="#ab3abc860ff8e4fda8234b54cbec3d137">More...</a><br /></td></tr>
<tr class="separator:ab3abc860ff8e4fda8234b54cbec3d137"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9a16ffaf872861903fdf2e97fcfe958f"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioThumbnailBase.html#a9a16ffaf872861903fdf2e97fcfe958f">getHashCode</a> () const =0</td></tr>
<tr class="memdesc:a9a16ffaf872861903fdf2e97fcfe958f"><td class="mdescLeft"> </td><td class="mdescRight">Returns the hash code that was set by <a class="el" href="classAudioThumbnailBase.html#a8fd77ac3757e9eca141ab1cbc4e7d269" title="Specifies the file or stream that contains the audio file. ">setSource()</a> or <a class="el" href="classAudioThumbnailBase.html#ad6960274ea876808fd2e6df6f0761e9c" title="Gives the thumbnail an AudioFormatReader to use directly. ">setReader()</a>. <a href="#a9a16ffaf872861903fdf2e97fcfe958f">More...</a><br /></td></tr>
<tr class="separator:a9a16ffaf872861903fdf2e97fcfe958f"><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>
<tr class="separator:a3b2f8465cc6c09c0583c8bdf56319742 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<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>
<tr class="separator:ae558a26c795278549a63e342bd5f1650 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<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>
<tr class="separator:a6b9c150078318d419debc82e6f22ce58 inherit pub_methods_classChangeBroadcaster"><td class="memSeparator" colspan="2"> </td></tr>
<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>
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<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>
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<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>
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<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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<tr class="memitem:a48e39e836142669e489b04389123536a inherit pub_methods_classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html#a48e39e836142669e489b04389123536a">reset</a> (int <a class="el" href="classAudioFormatWriter.html#af33e6836e6dbbcd774ac166453c5446c">numChannels</a>, double <a class="el" href="classAudioFormatWriter.html#aafefbda90e2a58cb057e89e995decfd2">sampleRate</a>, <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> totalSamplesInSource)=0</td></tr>
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<tr class="memitem:aa4fbc037fadc84e796c5840fdf920063 inherit pub_methods_classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classAudioFormatWriter_1_1ThreadedWriter_1_1IncomingDataReceiver.html#aa4fbc037fadc84e796c5840fdf920063">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)=0</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Provides a base for classes that can store and draw scaled views of an audio waveform. </p>
<p>Typically, you'll want to use the derived class <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>, which provides a concrete implementation.</p>
<dl class="section see"><dt>See also</dt><dd><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>, <a class="el" href="classAudioThumbnailCache.html" title="An instance of this class is used to manage multiple AudioThumbnail objects. ">AudioThumbnailCache</a> </dd></dl>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#af7b4ebde2996de4bed6e1cf048b11467">§ </a></span>AudioThumbnailBase()</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a2ef25f2c29e6363e346c2cb819e7a5b6">§ </a></span>~AudioThumbnailBase()</h2>
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<td class="memname">virtual AudioThumbnailBase::~AudioThumbnailBase </td>
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<p>References <a class="el" href="classAudioFormatWriter.html#a436de23247a535b447ed8ddf6100c496">AudioFormatWriter::getNumChannels()</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a53a5be624c9de79a672777d3697cfd48">§ </a></span>clear()</h2>
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<p>Clears and resets the thumbnail. </p>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a3b5a0fab0c544023b734b545ae15e22a">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8fd77ac3757e9eca141ab1cbc4e7d269">§ </a></span>setSource()</h2>
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<td class="memname">virtual bool AudioThumbnailBase::setSource </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="classAudioThumbnailBase.html#a8fd77ac3757e9eca141ab1cbc4e7d269">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>Implemented in <a class="el" href="classAudioThumbnail.html#a1c10b38a794d96b2d26acbbc15946319">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad6960274ea876808fd2e6df6f0761e9c">§ </a></span>setReader()</h2>
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<td class="paramtype"><a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> </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="classAudioThumbnailBase.html#a8fd77ac3757e9eca141ab1cbc4e7d269" 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>Implemented in <a class="el" href="classAudioThumbnail.html#a67fb7eb4571c0442789b34139dfb47f9">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a84319e0027a1d0b98a38b51c00fa2d5c">§ </a></span>loadFrom()</h2>
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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="classAudioThumbnailBase.html#a9cb4b72aa47359c671f89fc25eae0a72" 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="classAudioThumbnailBase.html#a9cb4b72aa47359c671f89fc25eae0a72" title="Saves the low res thumbnail data to an output stream. ">saveTo</a> </dd></dl>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#aa0f585f827cda690c98264045be8d1b7">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9cb4b72aa47359c671f89fc25eae0a72">§ </a></span>saveTo()</h2>
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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="classAudioThumbnailBase.html#a84319e0027a1d0b98a38b51c00fa2d5c" 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="classAudioThumbnailBase.html#a84319e0027a1d0b98a38b51c00fa2d5c" title="Reloads the low res thumbnail data from an input stream. ">loadFrom</a> </dd></dl>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#ac3535275e40a4414ef1081fcecbf814e">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6677b1ec042a69aa14ceec756d292671">§ </a></span>getNumChannels()</h2>
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<p>Returns the number of channels in the file. </p>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a77ca661abaa7f1321c0cb2737578cd70">AudioThumbnail</a>.</p>
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<p>Returns the length of the audio file, in seconds. </p>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a76892e0159356999dfe317fa1c5e044b">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab7e4df6d6c5e96943f3f6ca184235a57">§ </a></span>drawChannel()</h2>
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<td class="memname">virtual void AudioThumbnailBase::drawChannel </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>Implemented in <a class="el" href="classAudioThumbnail.html#ab9b136a4b025b6a0f283cef57c61b893">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7779a08868bbb6581acb904f200c7877">§ </a></span>drawChannels()</h2>
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<p>Draws the waveforms for all channels in the thumbnail. </p>
<p>This will call <a class="el" href="classAudioThumbnailBase.html#ab7e4df6d6c5e96943f3f6ca184235a57" 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="classAudioThumbnailBase.html#ab7e4df6d6c5e96943f3f6ca184235a57" title="Draws the waveform for a channel. ">drawChannel</a> </dd></dl>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a8fc354b03e88e66771ef3b9647fdd9fa">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aacffa9ccff66765ea16fad7aca98323e">§ </a></span>isFullyLoaded()</h2>
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<td class="memname">virtual bool AudioThumbnailBase::isFullyLoaded </td>
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<p>Returns true if the low res preview is fully generated. </p>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a37850d03f49e57a15487d493505fbe2c">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad04c3c2c5a003df0296faab4f017081f">§ </a></span>getNumSamplesFinished()</h2>
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<td class="memname">virtual <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> AudioThumbnailBase::getNumSamplesFinished </td>
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<p>Returns the number of samples that have been set in the thumbnail. </p>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a8992480a29946f7c629bc250a208e8ea">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8efca4beb3d0f32b65be53be933a8e81">§ </a></span>getApproximatePeak()</h2>
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<td class="memname">virtual float AudioThumbnailBase::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>Implemented in <a class="el" href="classAudioThumbnail.html#a53a867a5d46790deb5135a24cfcf85c6">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab3abc860ff8e4fda8234b54cbec3d137">§ </a></span>getApproximateMinMax()</h2>
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<td class="memname">virtual void AudioThumbnailBase::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>Implemented in <a class="el" href="classAudioThumbnail.html#a84a4d6ab047f3880691ba8f70f747b3f">AudioThumbnail</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9a16ffaf872861903fdf2e97fcfe958f">§ </a></span>getHashCode()</h2>
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<td class="memname">virtual <a class="el" href="juce__MathsFunctions_8h.html#aecfc3c54bd29ad5964e1c1c3ccbf89df">int64</a> AudioThumbnailBase::getHashCode </td>
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<p>Returns the hash code that was set by <a class="el" href="classAudioThumbnailBase.html#a8fd77ac3757e9eca141ab1cbc4e7d269" title="Specifies the file or stream that contains the audio file. ">setSource()</a> or <a class="el" href="classAudioThumbnailBase.html#ad6960274ea876808fd2e6df6f0761e9c" title="Gives the thumbnail an AudioFormatReader to use directly. ">setReader()</a>. </p>
<p>Implemented in <a class="el" href="classAudioThumbnail.html#a943ab9611f881a53106c002effe280a4">AudioThumbnail</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__AudioThumbnailBase_8h.html">juce_AudioThumbnailBase.h</a></li>
</ul>
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