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Attempt to fix an issue related to 8x8 transform and segfeature

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logically this commit should NOT change anything, but seems to help
revert the 3DB loss on bowing in the following commit:

https://on2-git.corp.google.com/g/#change,6193

This is still debugging in progress. Need further investigation to
understand the root cause of the issue.

Change-Id: I0b49d1ef3a311dfff58c6acd3eaebdb3bda6257c
This commit is contained in:
Yaowu Xu 2011-11-04 19:08:51 -07:00 committed by Paul Wilkins
parent a9df4183a6
commit 6e165e86a7
1 changed files with 9 additions and 9 deletions
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18
vp8/common/idctllm.c
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@ -399,14 +399,14 @@ static void idctcol (int *blk)
x4 = (181 * (x4 - x5) + 128) >> 8;
/* fourth stage */
blk[8 * 0] = (x7 + x1 ) >> 15;
blk[8 * 1] = (x3 + x2 ) >> 15;
blk[8 * 2] = (x0 + x4 ) >> 15;
blk[8 * 3] = (x8 + x6 ) >> 15;
blk[8 * 4] = (x8 - x6 ) >> 15;
blk[8 * 5] = (x0 - x4 ) >> 15;
blk[8 * 6] = (x3 - x2 ) >> 15;
blk[8 * 7] = (x7 - x1 ) >> 15;
blk[8 * 0] = (x7 + x1 ) >> 14;
blk[8 * 1] = (x3 + x2 ) >> 14;
blk[8 * 2] = (x0 + x4 ) >> 14;
blk[8 * 3] = (x8 + x6 ) >> 14;
blk[8 * 4] = (x8 - x6 ) >> 14;
blk[8 * 5] = (x0 - x4 ) >> 14;
blk[8 * 6] = (x3 - x2 ) >> 14;
blk[8 * 7] = (x7 - x1 ) >> 14;
}
#define TX_DIM 8
@ -434,7 +434,7 @@ void vp8_short_idct8x8_c(short *coefs, short *block, int pitch)
{
for (j = 0; j < TX_DIM; j++)
{
block[i*shortpitch+j] = X[i * TX_DIM + j];
block[i*shortpitch+j] = X[i * TX_DIM + j]>>1;
}
}
}