Changeset 8b69453

Timestamp:

Sep 15, 2018, 4:54:13 PM (6 years ago)

Author:

Paul Brossier <piem@piem.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master

Children:

3cb2a52

Parents:

0fbbb067

git-author:

Paul Brossier <piem@piem.org> (09/15/18 16:42:38)

git-committer:

Paul Brossier <piem@piem.org> (09/15/18 16:54:13)

Message:

src/spectral/dct.c: check if accelerate support size

File:

• src/spectral/dct.c (modified) (1 diff)

src/spectral/dct.c

@@ -84 +84 @@
   if ((sint_t)size <= 0) goto beach;
 #if defined(HAVE_ACCELERATE)
-  // TODO check
   // vDSP supports sizes = f * 2 ** n, where n >= 4 and f in [1, 3, 5, 15]
   // see https://developer.apple.com/documentation/accelerate/1449930-vdsp_dct_createsetup
-  if (aubio_is_power_of_two(size/16) != 1
-      || (size/16 != 3 && size/16 != 5 && size/16 != 15)) {
-    goto plain;
+  {
+    uint_t radix = size;
+    uint_t order = 0;
+    while ((radix / 2) * 2 == radix) {
+      radix /= 2;
+      order++;
+    }
+    if (order < 4 || (radix != 1 && radix != 3 && radix != 5 && radix != 15)) {
+      goto plain;
+    }
   }
   s->dct = (void *)new_aubio_dct_accelerate (size);