shithub: aubio

Info  •  Files  •  Log  •  Branches

src/spectral/phasevoc.c: optimize swapbuffers by using memcpy

--- a/src/spectral/phasevoc.c

+++ b/src/spectral/phasevoc.c

@@ -119,6 +119,7 @@

 static void aubio_pvoc_swapbuffers(smpl_t * data, smpl_t * dataold, 

     const smpl_t * datanew, uint_t win_s, uint_t hop_s)

 {

+#if !HAVE_MEMCPY_HACKS

   uint_t i;

   for (i = 0; i < win_s - hop_s; i++)

     data[i] = dataold[i];

@@ -126,6 +127,14 @@

     data[win_s - hop_s + i] = datanew[i];

   for (i = 0; i < win_s - hop_s; i++)

     dataold[i] = data[i + hop_s];

+#else

+  memcpy(data, dataold, (win_s - hop_s) * sizeof(smpl_t));

+  data += win_s - hop_s;

+  memcpy(data, datanew, hop_s * sizeof(smpl_t));

+  data -= win_s - hop_s;

+  data += hop_s;

+  memcpy(dataold, data, (win_s - hop_s) * sizeof(smpl_t));

+#endif

 }

 static void aubio_pvoc_addsynth(const smpl_t * synth, smpl_t * synthold,