IPlug: Fixed scratch buffers for disconnected I/O.

Scratch buffers might not be valid after resize, oops! Fixes crash in Adobe Audition CS6 5.0 when output is mono.
TaleTN · Jan 14, 2020 · 0f87c17 · 0f87c17
1 parent 7645b5c
commit 0f87c17
Showing 1 changed file with 10 additions and 4 deletions.
diff --git a/WDL/IPlug/IPlugBase.cpp b/WDL/IPlug/IPlugBase.cpp
@@ -218,13 +218,19 @@ void IPlugBase::SetBlockSize(int blockSize)
     int i, nIn = NInChannels(), nOut = NOutChannels();
     for (i = 0; i < nIn; ++i) {
       InChannel* pInChannel = mInChannels.Get(i);
-      pInChannel->mScratchBuf.Resize(blockSize);
-      memset(pInChannel->mScratchBuf.Get(), 0, blockSize * sizeof(double));
+      double* pScratch = pInChannel->mScratchBuf.Resize(blockSize);
+      memset(pScratch, 0, blockSize * sizeof(double));
+      if (!pInChannel->mConnected) {
+        *(pInChannel->mSrc) = pScratch;
+      }
     }
     for (i = 0; i < nOut; ++i) {
       OutChannel* pOutChannel = mOutChannels.Get(i);
-      pOutChannel->mScratchBuf.Resize(blockSize);
-      memset(pOutChannel->mScratchBuf.Get(), 0, blockSize * sizeof(double));
+      double* pScratch = pOutChannel->mScratchBuf.Resize(blockSize);
+      memset(pScratch, 0, blockSize * sizeof(double));
+      if (!pOutChannel->mConnected) {
+        *(pOutChannel->mDest) = pScratch;
+      }
     }
     mBlockSize = blockSize;
   }