diff options
Diffstat (limited to 'apps/codecs/libwmapro/wmapro_math.h')
| -rw-r--r-- | apps/codecs/libwmapro/wmapro_math.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/apps/codecs/libwmapro/wmapro_math.h b/apps/codecs/libwmapro/wmapro_math.h index 83fbb40..b339d86 100644 --- a/apps/codecs/libwmapro/wmapro_math.h +++ b/apps/codecs/libwmapro/wmapro_math.h @@ -1,8 +1,13 @@ +#ifndef _WMAPRO_MATH_H_ +#define _WMAPRO_MATH_H_ + #include <inttypes.h> #include "types.h" #define fixtof16(x) (float)((float)(x) / (float)(1 << 16)) +#define fixtof31(x) (float)((float)(x) / (float)(1 << 31)) #define ftofix16(x) ((int32_t)((x) * (float)(1 << 16) + ((x) < 0 ? -0.5:0.5))) +#define ftofix31(x) ((int32_t)((x) * (float)(1 << 31) + ((x) < 0 ? -0.5:0.5))) static inline FIXED fixmulshift(FIXED x, FIXED y, int shamt) { @@ -36,11 +41,11 @@ static inline void vector_fixmul_window(FIXED *dst, const FIXED *src0, } static inline void vector_fixmul_scalar(FIXED *dst, const FIXED *src, FIXED mul, - int len) + int len, int shift) { int i; - for(i=0; i<len; i++) { - dst[i] = fixmulshift(src[i],mul,32); - } - + for(i=0; i<len; i++) + dst[i] = fixmulshift(src[i],mul,shift); } + +#endif /* _WMAPRO_MATH_H_ */ |