Define EffectClientInterface::GetBlockSize()

include/audacity/EffectInterface.h

@@ -156,7 +156,9 @@ public:
    virtual int GetMidiOutCount() = 0;
 
    virtual void SetSampleRate(double rate) = 0;
+   // Suggest a block size, but the return is the size that was really set:
    virtual size_t SetBlockSize(size_t maxBlockSize) = 0;
+   virtual size_t GetBlockSize() const = 0;
 
    virtual sampleCount GetLatency() = 0;
    virtual size_t GetTailSize() = 0;

src/effects/Effect.cpp

@@ -373,6 +373,16 @@ size_t Effect::SetBlockSize(size_t maxBlockSize)
    return mBlockSize;
 }
 
+size_t Effect::GetBlockSize() const
+{
+   if (mClient)
+   {
+      return mClient->GetBlockSize();
+   }
+
+   return mBlockSize;
+}
+
 sampleCount Effect::GetLatency()
 {
    if (mClient)

src/effects/Effect.h

@@ -121,6 +121,7 @@ class AUDACITY_DLL_API Effect /* not final */ : public wxEvtHandler,
 
    void SetSampleRate(double rate) override;
    size_t SetBlockSize(size_t maxBlockSize) override;
+   size_t GetBlockSize() const override;
 
    bool IsReady() override;
    bool ProcessInitialize(sampleCount totalLen, ChannelNames chanMap = NULL) override;

src/effects/VST/VSTEffect.cpp

@@ -1359,6 +1359,11 @@ size_t VSTEffect::SetBlockSize(size_t maxBlockSize)
    return mBlockSize;
 }
 
+size_t VSTEffect::GetBlockSize() const
+{
+   return mBlockSize;
+}
+
 void VSTEffect::SetSampleRate(double rate)
 {
    mSampleRate = (float) rate;

src/effects/VST/VSTEffect.h

@@ -132,6 +132,7 @@ class VSTEffect final : public wxEvtHandler,
 
    void SetSampleRate(double rate) override;
    size_t SetBlockSize(size_t maxBlockSize) override;
+   size_t GetBlockSize() const override;
 
    bool IsReady() override;
    bool ProcessInitialize(sampleCount totalLen, ChannelNames chanMap = NULL) override;

src/effects/audiounits/AudioUnitEffect.cpp

@@ -1192,6 +1192,11 @@ size_t AudioUnitEffect::SetBlockSize(size_t maxBlockSize)
    return mBlockSize;
 }
 
+size_t AudioUnitEffect::GetBlockSize() const
+{
+   return mBlockSize;
+}
+
 sampleCount AudioUnitEffect::GetLatency()
 {
    // Retrieve the latency (can be updated via an event)

src/effects/audiounits/AudioUnitEffect.h

@@ -79,6 +79,7 @@ public:
 
    void SetSampleRate(double rate) override;
    size_t SetBlockSize(size_t maxBlockSize) override;
+   size_t GetBlockSize() const override;
 
    sampleCount GetLatency() override;
    size_t GetTailSize() override;

src/effects/ladspa/LadspaEffect.cpp

@@ -889,6 +889,11 @@ size_t LadspaEffect::SetBlockSize(size_t maxBlockSize)
    return mBlockSize;
 }
 
+size_t LadspaEffect::GetBlockSize() const
+{
+   return mBlockSize;
+}
+
 sampleCount LadspaEffect::GetLatency()
 {
    if (mUseLatency && mLatencyPort >= 0 && !mLatencyDone)

src/effects/ladspa/LadspaEffect.h

@@ -77,6 +77,7 @@ public:
 
    void SetSampleRate(double rate) override;
    size_t SetBlockSize(size_t maxBlockSize) override;
+   size_t GetBlockSize() const override;
 
    sampleCount GetLatency() override;
    size_t GetTailSize() override;

src/effects/lv2/LV2Effect.cpp

@@ -728,6 +728,11 @@ size_t LV2Effect::SetBlockSize(size_t maxBlockSize)
    return mBlockSize;
 }
 
+size_t LV2Effect::GetBlockSize() const
+{
+   return mBlockSize;
+}
+
 sampleCount LV2Effect::GetLatency()
 {
    if (mUseLatency && mLatencyPort >= 0 && !mLatencyDone)

src/effects/lv2/LV2Effect.h

@@ -137,6 +137,7 @@ public:
 
    void SetSampleRate(double rate) override;
    size_t SetBlockSize(size_t maxBlockSize) override;
+   size_t GetBlockSize() const override;
 
    sampleCount GetLatency() override;
    size_t GetTailSize() override;