libobs, UI: Add true peak measurements
Add a new algorithm to calculate the true-peak. It implements the Whittaker- Shannon interpolation from four samples to create 4 intermediate samples (5 x oversampling) inbetween the middle two samples. With 4 samples and 4 intermediate samples the algorithm can be implemented as a 4x4 vector-matrix cross product, which is ideal for SSE. I've also replaced the sample-peak algorithm using SSE as well to improve performance. Closes obsproject/obs-studio#1189
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@@ -3362,7 +3362,7 @@
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</property>
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</widget>
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</item>
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<item row="8" column="0" colspan="2">
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<item row="9" column="0" colspan="2">
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<widget class="QScrollArea" name="audioSourceScrollArea">
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<property name="widgetResizable">
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<bool>true</bool>
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@@ -3379,7 +3379,7 @@
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</widget>
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</widget>
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</item>
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<item row="9" column="1">
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<item row="10" column="1">
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<widget class="QLabel" name="audioMsg">
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<property name="styleSheet">
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<string notr="true">color: rgb(255, 0, 4);</string>
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@@ -3392,7 +3392,7 @@
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</property>
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</widget>
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</item>
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<item row="10" column="1">
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<item row="11" column="1">
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<widget class="QLabel" name="audioMsg_2">
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<property name="text">
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<string notr="true"/>
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@@ -3440,6 +3440,30 @@
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</item>
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</widget>
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</item>
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<item row="8" column="1">
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<widget class="QComboBox" name="peakMeterType">
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<property name="currentIndex">
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<number>0</number>
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</property>
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<item>
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<property name="text">
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<string>Basic.Settings.Audio.PeakMeterType.SamplePeak</string>
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</property>
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</item>
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<item>
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<property name="text">
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<string>Basic.Settings.Audio.PeakMeterType.TruePeak</string>
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</property>
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</item>
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</widget>
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</item>
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<item row="8" column="0">
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<widget class="QLabel" name="label_66">
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<property name="text">
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<string>Basic.Settings.Audio.PeakMeterType</string>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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<widget class="QWidget" name="videoPage">
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@@ -3744,8 +3768,8 @@
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<rect>
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<x>0</x>
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<y>0</y>
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<width>98</width>
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<height>28</height>
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<width>818</width>
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<height>697</height>
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</rect>
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</property>
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<layout class="QFormLayout" name="hotkeyLayout">
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@@ -3791,7 +3815,7 @@
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<rect>
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<x>0</x>
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<y>0</y>
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<width>593</width>
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<width>803</width>
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<height>761</height>
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</rect>
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</property>
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