ref: a96bf2038cd55f762d6468bdc61a0c946a7fefa1
parent: a78a4b4551294395d25cf0e07e78241562779483
parent: 62a78f0342ca45fc295aa63bbc4d6974b0c57da7
author: Yaowu Xu <yaowu@google.com>
date: Thu Feb 16 10:32:33 EST 2012
Merge "re-scaled 2nd order haar transform" into experimental
--- a/vp8/common/idctllm.c
+++ b/vp8/common/idctllm.c
@@ -487,10 +487,10 @@
op[i] = 0;
}
- op[0] = (ip[0] + ip[1] + ip[4] + ip[8])>>2;
- op[1] = (ip[0] - ip[1] + ip[4] - ip[8])>>2;
- op[4] = (ip[0] + ip[1] - ip[4] - ip[8])>>2;
- op[8] = (ip[0] - ip[1] - ip[4] + ip[8])>>2;
+ op[0] = (ip[0] + ip[1] + ip[4] + ip[8])>>1;
+ op[1] = (ip[0] - ip[1] + ip[4] - ip[8])>>1;
+ op[4] = (ip[0] + ip[1] - ip[4] - ip[8])>>1;
+ op[8] = (ip[0] - ip[1] - ip[4] + ip[8])>>1;
}
void vp8_short_ihaar2x2_1_c(short *input, short *output, int pitch)
--- a/vp8/encoder/dct.c
+++ b/vp8/encoder/dct.c
@@ -120,10 +120,10 @@
op1[i] = 0;
}
- op1[0]=ip1[0] + ip1[1] + ip1[4] + ip1[8];
- op1[1]=ip1[0] - ip1[1] + ip1[4] - ip1[8];
- op1[4]=ip1[0] + ip1[1] - ip1[4] - ip1[8];
- op1[8]=ip1[0] - ip1[1] - ip1[4] + ip1[8];
+ op1[0]=(ip1[0] + ip1[1] + ip1[4] + ip1[8])>>1;
+ op1[1]=(ip1[0] - ip1[1] + ip1[4] - ip1[8])>>1;
+ op1[4]=(ip1[0] + ip1[1] - ip1[4] - ip1[8])>>1;
+ op1[8]=(ip1[0] - ip1[1] - ip1[4] + ip1[8])>>1;
}
#endif