diff options
Diffstat (limited to 'core/math/audio_frame.h')
| -rw-r--r-- | core/math/audio_frame.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/core/math/audio_frame.h b/core/math/audio_frame.h index dbababf762..acd74903bb 100644 --- a/core/math/audio_frame.h +++ b/core/math/audio_frame.h @@ -3,8 +3,25 @@ #include "typedefs.h" + +static inline float undenormalise(volatile float f) +{ + union { + uint32_t i; + float f; + } v; + + v.f = f; + + // original: return (v.i & 0x7f800000) == 0 ? 0.0f : f; + // version from Tim Blechmann: + return (v.i & 0x7f800000) < 0x08000000 ? 0.0f : f; +} + + struct AudioFrame { + //left and right samples float l,r; _ALWAYS_INLINE_ const float& operator[](int idx) const { return idx==0?l:r; } @@ -15,14 +32,30 @@ struct AudioFrame { _ALWAYS_INLINE_ AudioFrame operator*(const AudioFrame& p_frame) const { return AudioFrame(l*p_frame.l,r*p_frame.r); } _ALWAYS_INLINE_ AudioFrame operator/(const AudioFrame& p_frame) const { return AudioFrame(l/p_frame.l,r/p_frame.r); } + _ALWAYS_INLINE_ AudioFrame operator+(float p_sample) const { return AudioFrame(l+p_sample,r+p_sample); } + _ALWAYS_INLINE_ AudioFrame operator-(float p_sample) const { return AudioFrame(l-p_sample,r-p_sample); } + _ALWAYS_INLINE_ AudioFrame operator*(float p_sample) const { return AudioFrame(l*p_sample,r*p_sample); } + _ALWAYS_INLINE_ AudioFrame operator/(float p_sample) const { return AudioFrame(l/p_sample,r/p_sample); } + _ALWAYS_INLINE_ void operator+=(const AudioFrame& p_frame) { l+=p_frame.l; r+=p_frame.r; } _ALWAYS_INLINE_ void operator-=(const AudioFrame& p_frame) { l-=p_frame.l; r-=p_frame.r; } _ALWAYS_INLINE_ void operator*=(const AudioFrame& p_frame) { l*=p_frame.l; r*=p_frame.r; } _ALWAYS_INLINE_ void operator/=(const AudioFrame& p_frame) { l/=p_frame.l; r/=p_frame.r; } + _ALWAYS_INLINE_ void operator+=(float p_sample) { l+=p_sample; r+=p_sample; } + _ALWAYS_INLINE_ void operator-=(float p_sample) { l-=p_sample; r-=p_sample; } + _ALWAYS_INLINE_ void operator*=(float p_sample) { l*=p_sample; r*=p_sample; } + _ALWAYS_INLINE_ void operator/=(float p_sample) { l/=p_sample; r/=p_sample; } + + _ALWAYS_INLINE_ void undenormalise() { + l = ::undenormalise(l); + r = ::undenormalise(r); + } + _ALWAYS_INLINE_ AudioFrame(float p_l, float p_r) {l=p_l; r=p_r;} _ALWAYS_INLINE_ AudioFrame(const AudioFrame& p_frame) {l=p_frame.l; r=p_frame.r;} + _ALWAYS_INLINE_ AudioFrame() {} }; #endif |