Merge pull request #20 from dennisss/android-neon-fixes

Android neon fixes

1 files changed, 17 insertions, 0 deletions

diff --git a/src/ffts.c b/src/ffts.c
index 5a42122..7c46bfc 100644
--- a/src/ffts.c
+++ b/src/ffts.c
@@ -53,6 +53,18 @@
 #endif
 
 void ffts_execute(ffts_plan_t *p, const void *  in, void *  out) {
+
+//TODO: Define NEEDS_ALIGNED properly instead 
+#if defined(HAVE_SSE) || defined(HAVE_NEON)
+	if(((int)in % 16) != 0) {
+		LOG("ffts_execute: input buffer needs to be aligned to a 128bit boundary\n");
+	}
+
+	if(((int)out % 16) != 0) {
+		LOG("ffts_execute: output buffer needs to be aligned to a 128bit boundary\n");
+	}
+#endif
+
 	p->transform(p, (const float *)in, (float *)out);
 }
 
@@ -85,6 +97,11 @@ void ffts_free_1d(ffts_plan_t *p) {
 }
 
 ffts_plan_t *ffts_init_1d(size_t N, int sign) {
+	if(N == 0 || (N & (N - 1)) != 0){
+		LOG("FFT size must be a power of two\n");
+		return NULL;
+	}
+
 	ffts_plan_t *p = malloc(sizeof(ffts_plan_t));
 	size_t leafN = 8;	
 	size_t i;