AudioBuffer: Add equality operators

modules/juce_audio_basics/buffers/juce_AudioSampleBuffer.h

@@ -1280,6 +1280,31 @@ private:
     JUCE_LEAK_DETECTOR (AudioBuffer)
 };
 
+//==============================================================================
+template <typename Type>
+bool operator== (const AudioBuffer<Type>& a, const AudioBuffer<Type>& b)
+{
+    if (a.getNumChannels() != b.getNumChannels())
+        return false;
+
+    for (auto c = 0; c < a.getNumChannels(); ++c)
+    {
+        const auto begin = [c] (auto& x) { return x.getReadPointer (c); };
+        const auto end = [c] (auto& x) { return x.getReadPointer (c) + x.getNumSamples(); };
+
+        if (! std::equal (begin (a), end (a), begin (b), end (b)))
+            return false;
+    }
+
+    return true;
+}
+
+template <typename Type>
+bool operator!= (const AudioBuffer<Type>& a, const AudioBuffer<Type>& b)
+{
+    return ! (a == b);
+}
+
 //==============================================================================
 /**
     A multi-channel buffer of 32-bit floating point audio samples.

modules/juce_audio_basics/sources/juce_MemoryAudioSource.cpp

@@ -108,26 +108,6 @@ void MemoryAudioSource::setLooping (bool shouldLoop)
 //==============================================================================
 #if JUCE_UNIT_TESTS
 
-static bool operator== (const AudioBuffer<float>& a, const AudioBuffer<float>& b)
-{
-    if (a.getNumChannels() != b.getNumChannels())
-        return false;
-
-    for (int channel = 0; channel < a.getNumChannels(); ++channel)
-    {
-        auto* aPtr = a.getReadPointer (channel);
-        auto* bPtr = b.getReadPointer (channel);
-
-        if (std::vector<float> (aPtr, aPtr + a.getNumSamples())
-            != std::vector<float> (bPtr, bPtr + b.getNumSamples()))
-        {
-            return false;
-        }
-    }
-
-    return true;
-}
-
 struct MemoryAudioSourceTests  : public UnitTest
 {
     MemoryAudioSourceTests()  : UnitTest ("MemoryAudioSource", UnitTestCategories::audio)  {}

modules/juce_audio_formats/format/juce_BufferingAudioFormatReader.cpp

@@ -176,26 +176,6 @@ bool BufferingAudioReader::readNextBufferChunk()
 //==============================================================================
 #if JUCE_UNIT_TESTS
 
-static bool operator== (const AudioBuffer<float>& a, const AudioBuffer<float>& b)
-{
-    if (a.getNumChannels() != b.getNumChannels() || a.getNumSamples() != b.getNumSamples())
-        return false;
-
-    for (int channel = 0; channel < a.getNumChannels(); ++channel)
-    {
-        auto* aPtr = a.getReadPointer (channel);
-        auto* bPtr = b.getReadPointer (channel);
-
-        if (std::vector<float> (aPtr, aPtr + a.getNumSamples())
-            != std::vector<float> (bPtr, bPtr + b.getNumSamples()))
-        {
-            return false;
-        }
-    }
-
-    return true;
-}
-
 static bool isSilent (const AudioBuffer<float>& b)
 {
     for (int channel = 0; channel < b.getNumChannels(); ++channel)