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Try to enable 8x8 tranform for smaller resolution

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The commit overall on derf test is break even to very slightly positive
comparing to all 4x4 transform.

Change-Id: I2a7c19599aa54c2d3a5b35db0dc891ba8a6a2b26
This commit is contained in:
Yaowu Xu 2012-02-28 11:49:12 -08:00
parent eb87b56eab
commit 42891098f3
1 changed files with 2 additions and 1 deletions
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3
vp8/encoder/ratectrl.c
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@ -252,7 +252,8 @@ void vp8_setup_key_frame(VP8_COMP *cpi)
void vp8_setup_inter_frame(VP8_COMP *cpi)
{
#if CONFIG_T8X8
if(cpi->common.Width * cpi->common.Height > 640*360)
if(cpi->common.Width * cpi->common.Height > 640*360
||cpi->this_frame_target < 7 * cpi->common.MBs)
cpi->common.txfm_mode = ALLOW_8X8;
else
cpi->common.txfm_mode = ONLY_4X4;