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swr: unroll audioconvert core C function

36k->32k decicycles

Michael Niedermayer committed 14 years ago

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

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libswresample/audioconvert.c+9−2
@@ -47,9 +47,16 @@ struct AudioConvert { · 46 unmodified lines
47#define CONV_FUNC(ofmt, otype, ifmt, expr)\47#define CONV_FUNC(ofmt, otype, ifmt, expr)\
48static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)\48static 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 - 3*os;\
51 while(po < end2){\
51 *(otype*)po = expr; pi += is; po += os;\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//FIXME put things below under ifdefs so we do not waste space for cases no codec will need62//FIXME put things below under ifdefs so we do not waste space for cases no codec will need

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