New AudioSampleBuffer::applyGain method.

modules/juce_audio_basics/buffers/juce_AudioSampleBuffer.cpp

@@ -292,6 +292,11 @@ void AudioSampleBuffer::applyGain (const int startSample,
         applyGain (i, startSample, numSamples, gain);
 }
 
+void AudioSampleBuffer::applyGain (const float gain) noexcept
+{
+    applyGain (0, size, gain);
+}
+
 void AudioSampleBuffer::applyGainRamp (const int startSample,
                                        const int numSamples,
                                        const float startGain,

modules/juce_audio_basics/buffers/juce_AudioSampleBuffer.h

@@ -241,6 +241,9 @@ public:
                     int numSamples,
                     float gain) noexcept;
 
+    /** Applies a gain multiple to all the audio data. */
+    void applyGain (float gain) noexcept;
+
     /** Applies a range of gains to a region of a channel.
 
         The gain that is applied to each sample will vary from