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avoid 4 + 

Originally committed as revision 5799 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-07-19 23:51:11 +00:00
parent d26a9ea0df
commit d9cf32d920
1 changed files with 7 additions and 13 deletions
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20
libavcodec/vp3dsp.c
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@ -112,8 +112,13 @@ static always_inline void idct(uint8_t *dst, int stride, int16_t *input, int typ
Cd = A + C;
Dd = B + D;
E = M(xC4S4, (ip[0*8] + ip[4*8]));
F = M(xC4S4, (ip[0*8] - ip[4*8]));
E = M(xC4S4, (ip[0*8] + ip[4*8])) + 8;
F = M(xC4S4, (ip[0*8] - ip[4*8])) + 8;
if(type==1){ //HACK
E += 16*128;
F += 16*128;
}
G = M(xC2S6, ip[2*8]) + M(xC6S2, ip[6*8]);
H = M(xC6S2, ip[2*8]) - M(xC2S6, ip[6*8]);
@ -127,17 +132,6 @@ static always_inline void idct(uint8_t *dst, int stride, int16_t *input, int typ
Fd = F - Ad;
Hd = Bd + H;
if(type==1){ //HACK
Gd += 16*128;
Add+= 16*128;
Ed += 16*128;
Fd += 16*128;
}
Gd += IdctAdjustBeforeShift;
Add += IdctAdjustBeforeShift;
Ed += IdctAdjustBeforeShift;
Fd += IdctAdjustBeforeShift;
/* Final sequence of operations over-write original inputs. */
if(type==0){
ip[0*8] = (Gd + Cd ) >> 4;