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swscale: use standard clipping functions. 

This generates better code on some non-x86 architectures.
This commit is contained in:
Ronald S. Bultje 2011-06-07 11:22:54 -04:00
parent e458b53605
commit f1e0b90c64
1 changed files with 20 additions and 33 deletions
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53
libswscale/swscale.c
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@ -404,6 +404,12 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
Y2>>=19;\
U >>=19;\
V >>=19;\
if ((Y1|Y2|U|V)&0x100) {\
Y1 = av_clip_uint8(Y1); \
Y2 = av_clip_uint8(Y2); \
U = av_clip_uint8(U); \
V = av_clip_uint8(V); \
}\
if (alpha) {\
A1 = 1<<18;\
A2 = 1<<18;\
@ -413,20 +419,10 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
}\
A1>>=19;\
A2>>=19;\
}\
if ((Y1|Y2|U|V)&256) {\
if (Y1>255) Y1=255; \
else if (Y1<0)Y1=0; \
if (Y2>255) Y2=255; \
else if (Y2<0)Y2=0; \
if (U>255) U=255; \
else if (U<0) U=0; \
if (V>255) V=255; \
else if (V<0) V=0; \
}\
if (alpha && ((A1|A2)&256)) {\
A1=av_clip_uint8(A1);\
A2=av_clip_uint8(A2);\
if ((A1|A2)&0x100) {\
A1 = av_clip_uint8(A1); \
A2 = av_clip_uint8(A2); \
}\
}
#define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \
@ -453,7 +449,7 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
for (j=0; j<lumFilterSize; j++)\
A += alpSrc[j][i ] * lumFilter[j];\
A >>=19;\
if (A&256)\
if (A&0x100)\
A = av_clip_uint8(A);\
}\
Y-= c->yuv2rgb_y_offset;\
@ -463,12 +459,9 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
B= Y + U*c->yuv2rgb_u2b_coeff;\
if ((R|G|B)&(0xC0000000)) {\
if (R>=(256<<22)) R=(256<<22)-1; \
else if (R<0)R=0; \
if (G>=(256<<22)) G=(256<<22)-1; \
else if (G<0)G=0; \
if (B>=(256<<22)) B=(256<<22)-1; \
else if (B<0)B=0; \
R = av_clip_uintp2(R, 30); \
G = av_clip_uintp2(G, 30); \
B = av_clip_uintp2(B, 30); \
}
#define YSCALE_YUV_2_GRAY16_C \
@ -476,8 +469,6 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
int j;\
int Y1 = 1<<18;\
int Y2 = 1<<18;\
int U = 1<<18;\
int V = 1<<18;\
\
const int i2= 2*i;\
\
@ -487,11 +478,9 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
}\
Y1>>=11;\
Y2>>=11;\
if ((Y1|Y2|U|V)&65536) {\
if (Y1>65535) Y1=65535; \
else if (Y1<0)Y1=0; \
if (Y2>65535) Y2=65535; \
else if (Y2<0)Y2=0; \
if ((Y1|Y2)&0x1000) {\
Y1 = av_clip_uint16(Y1); \
Y2 = av_clip_uint16(Y2); \
}
#define YSCALE_YUV_2_RGBX_C(type,alpha) \
@ -604,11 +593,9 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
}\
Y1>>=19;\
Y2>>=19;\
if ((Y1|Y2)&256) {\
if (Y1>255) Y1=255;\
else if (Y1<0)Y1=0;\
if (Y2>255) Y2=255;\
else if (Y2<0)Y2=0;\
if ((Y1|Y2)&0x100) {\
Y1 = av_clip_uint8(Y1); \
Y2 = av_clip_uint8(Y2); \
}\
acc+= acc + g[Y1+d128[(i+0)&7]];\
acc+= acc + g[Y2+d128[(i+1)&7]];\