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audio/vorbis: Refactoring: Use uintptr to calc a pointer value with an offset

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This commit is contained in:
Hajime Hoshi 2016-04-03 01:14:39 +09:00
parent 2475fd32a8
commit 4492c0dad0
1 changed files with 3 additions and 6 deletions
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9
exp/audio/vorbis/vorbis.go
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@ -5488,10 +5488,6 @@ int stb_vorbis_get_samples_float(stb_vorbis *f, int channels, float **buffer, in
#endif // STB_VORBIS_HEADER_ONLY
static inline short shortValue(short* data, int i) {
return data[i];
}
*/
import "C"
@ -5547,8 +5543,9 @@ type decoded struct {
}
func (d *decoded) at(offset int) C.short {
// return *(*C.short)(unsafe.Pointer(uintptr(unsafe.Pointer(d.data)) + uintptr(offset)))
return C.shortValue(d.data, C.int(offset))
const sizeOfShort = 2
p := uintptr(unsafe.Pointer(d.data))
return *(*C.short)(unsafe.Pointer(p + uintptr(offset*sizeOfShort)))
}
func (d *decoded) Read(b []byte) (int, error) {