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Fix some bugs handling input that is not aligned at 16 bytes or has 

stride!=width.

Originally committed as revision 18323 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Alan Curry 2006-04-27 21:42:41 +00:00
parent c4921874f5
commit 9c445fbe7a
1 changed files with 11 additions and 5 deletions
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16
postproc/yuv2rgb_altivec.c
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@ -278,7 +278,7 @@ static int altivec_##name (SwsContext *c, \
vector signed short R1,G1,B1; \
vector unsigned char R,G,B; \
\
vector unsigned char *uivP, *vivP; \
vector unsigned char *y1ivP, *y2ivP, *uivP, *vivP; \
vector unsigned char align_perm; \
\
vector signed short \
@ -292,7 +292,7 @@ static int altivec_##name (SwsContext *c, \
vector unsigned short lCSHIFT = c->CSHIFT; \
\
ubyte *y1i = in[0]; \
ubyte *y2i = in[0]+w; \
ubyte *y2i = in[0]+instrides[0]; \
ubyte *ui = in[1]; \
ubyte *vi = in[2]; \
\
@ -304,7 +304,7 @@ static int altivec_##name (SwsContext *c, \
(oplanes[0]+srcSliceY*outstrides[0]+outstrides[0]); \
\
\
instrides_scl[0] = instrides[0]; \
instrides_scl[0] = instrides[0]*2-w; /* the loop moves y{1,2}i by w */ \
instrides_scl[1] = instrides[1]-w/2; /* the loop moves ui by w/2 */ \
instrides_scl[2] = instrides[2]-w/2; /* the loop moves vi by w/2 */ \
\
@ -315,11 +315,17 @@ static int altivec_##name (SwsContext *c, \
\
for (j=0;j<w/16;j++) { \
\
y0 = vec_ldl (0,y1i); \
y1 = vec_ldl (0,y2i); \
y1ivP = (vector unsigned char *)y1i; \
y2ivP = (vector unsigned char *)y2i; \
uivP = (vector unsigned char *)ui; \
vivP = (vector unsigned char *)vi; \
\
align_perm = vec_lvsl (0, y1i); \
y0 = (vector unsigned char)vec_perm (y1ivP[0], y1ivP[1], align_perm);\
\
align_perm = vec_lvsl (0, y2i); \
y1 = (vector unsigned char)vec_perm (y2ivP[0], y2ivP[1], align_perm);\
\
align_perm = vec_lvsl (0, ui); \
u = (vector signed char)vec_perm (uivP[0], uivP[1], align_perm); \
\