commit 3dab35c0c95c7279b29b58d04f6e144fd880dca2
author hayati ayguen <h_ayguen@web.de> Thu Feb 27 05:13:21 2020 +0100
committer hayati ayguen <h_ayguen@web.de> Sat Feb 29 08:49:57 2020 +0100
tree fa920eb96e8e4bbd653754adef3cc0323a0702e9
parent 55be34f4d3a8f5fbc1bd1974ccdf953a1c062a38

bugfix: enable very small convolution lengths < minimum fft length

Signed-off-by: hayati ayguen <h_ayguen@web.de>

pffastconv.c

diff --git a/pffastconv.c b/pffastconv.c
index 9094bb4..daff7ee 100644
--- a/pffastconv.c
+++ b/pffastconv.c
@@ -98,11 +98,15 @@
 {
   PFFASTCONV_Setup * s = NULL;
   const int cplxFactor = ( (flags & PFFASTCONV_CPLX_INP_OUT) && (flags & PFFASTCONV_CPLX_SINGLE_FFT) ) ? 2 : 1;
+  const int minFftLen = 2*pffft_simd_size()*pffft_simd_size();
   int i, Nfft = 2 * nextPowerOfTwo(filterLen -1);
 #if FASTCONV_DBG_OUT
   const int iOldBlkLen = *blockLen;
 #endif
 
+  if ( Nfft < minFftLen )
+    Nfft = minFftLen;
+
   if ( flags & PFFASTCONV_CPLX_FILTER )
     return NULL;