Minor waste and more annoyingly triggers race detectors when the
re-initialization happens across multiple threads. cos(0) == 1 and by
default statics initialize to 0, so this check is safe.
Signed-off-by: Dale Curtis <dalecur...@chromium.org>
---
libavcodec/fft_template.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/fft_template.c b/libavcodec/fft_template.c
index 23ea453..2165ed0 100644
--- a/libavcodec/fft_template.c
+++ b/libavcodec/fft_template.c
@@ -92,6 +92,8 @@ av_cold void ff_init_ff_cos_tabs(int index)
int m = 1<<index;
double freq = 2*M_PI/m;
FFTSample *tab = FFT_NAME(ff_cos_tabs)[index];
+ if (tab[0])
+ return;
for(i=0; i<=m/4; i++)
tab[i] = FIX15(cos(i*freq));
for(i=1; i<m/4; i++)
--
2.6.0.rc2.230.g3dd15c0
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