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MODE_INFO size reduction

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Declared the bmi in MODE_INFO as a union instead of B_MODE_INFO.
This reduced the memory footprint by 518,400 bytes for 1080
resolutions.  The decoder performance improved by ~4% for the
clip used and the encoder showed very small improvements. (0.5%)
This reduction was first mentioned to me by John K. and in a
later discussion by Yaowu.
This is WIP.

Change-Id: I8e175fdbc46d28c35277302a04bee4540efc8d29
This commit is contained in:
Scott LaVarnway
2011-05-24 13:24:52 -04:00
parent 6d82d2d22e
commit e11f21af9a
13 changed files with 170 additions and 130 deletions
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20
vp8/encoder/encodeframe.c
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@@ -477,8 +477,24 @@ void encode_mb_row(VP8_COMP *cpi,
x->mb_activity_ptr++;
x->mb_norm_activity_ptr++;
for (i = 0; i < 16; i++)
vpx_memcpy(&xd->mode_info_context->bmi[i], &xd->block[i].bmi, sizeof(xd->block[i].bmi));
if(cm->frame_type != INTRA_FRAME)
{
if (xd->mode_info_context->mbmi.mode != B_PRED)
{
for (i = 0; i < 16; i++)
xd->mode_info_context->bmi[i].mv.as_int = xd->block[i].bmi.mv.as_int;
}else
{
for (i = 0; i < 16; i++)
xd->mode_info_context->bmi[i].as_mode = xd->block[i].bmi.mode;
}
}
else
{
if(xd->mode_info_context->mbmi.mode != B_PRED)
for (i = 0; i < 16; i++)
xd->mode_info_context->bmi[i].as_mode = xd->block[i].bmi.mode;
}
// adjust to the next column of macroblocks
x->src.y_buffer += 16;