diff options
Diffstat (limited to 'libavcodec/mdct.c')
| -rw-r--r-- | libavcodec/mdct.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavcodec/mdct.c b/libavcodec/mdct.c index c51f809714..07eef2b3d4 100644 --- a/libavcodec/mdct.c +++ b/libavcodec/mdct.c @@ -48,6 +48,13 @@ void ff_kbd_window_init(float *window, float alpha, int n) window[i] = sqrt(local_window[i] / sum); } +// Generate a sine window. +void ff_sine_window_init(float *window, int n) { + int i; + for(i = 0; i < n; i++) + window[i] = sin((i + 0.5) / (2 * n) * M_PI); +} + /** * init MDCT or IMDCT computation. */ |