From a82c6238ae286c12318e5ad512107b86ec337369 Mon Sep 17 00:00:00 2001 From: Mohamed Naufal Basheer Date: Thu, 17 Mar 2011 23:56:48 +0100 Subject: Add dot_product function for use by the G.723.1 decoder --- libavcodec/celp_math.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'libavcodec/celp_math.h') diff --git a/libavcodec/celp_math.h b/libavcodec/celp_math.h index 4cf656fb7e..476e668795 100644 --- a/libavcodec/celp_math.h +++ b/libavcodec/celp_math.h @@ -63,6 +63,17 @@ static inline int bidir_sal(int value, int offset) else return value << offset; } +/** + * returns the dot product of 2 int16_t vectors. + * @param a input data array + * @param b input data array + * @param length number of elements + * @param shift the result is scaled by 2^shift + * + * @return dot product = sum of elementwise products + */ +int ff_dot_product(const int16_t *a, const int16_t *b, int length, int shift); + /** * returns the dot product. * @param a input data array -- cgit v1.2.3