swr: unroll audioconvert core C function

36k->32k decicycles

Michael Niedermayer committed 14 years ago

Commit bbd3dc41 parent 4119fa71 file · +9 −2Browse files

Unified · Split

libswresample/audioconvert.c+9−2

@@ -47,9 +47,16 @@ struct AudioConvert { · 46 unmodified lines
47	47	#define CONV_FUNC(ofmt, otype, ifmt, expr)\
48	48	static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t po, const uint8_t pi, int is, int os, uint8_t *end)\
49	49	{\
50		− do{\
	50	+ uint8_t end2 = end - 3os;\
	51	+ while(po < end2){\
51	52	(otype)po = expr; pi += is; po += os;\
52		− }while(po < end);\
	53	+ (otype)po = expr; pi += is; po += os;\
	54	+ (otype)po = expr; pi += is; po += os;\
	55	+ (otype)po = expr; pi += is; po += os;\
	56	+ }\
	57	+ while(po < end){\
	58	+ (otype)po = expr; pi += is; po += os;\
	59	+ }\
53	60	}
54	61
55	62	//FIXME put things below under ifdefs so we do not waste space for cases no codec will need