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Update use_prev_frame_mvs flag in decoder.

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Added check to see if last frame was all intra.  This will
eliminate two checks in find_mv_refs_idx().  Also, do not
update the frame mvs if the current frame is all intra.

This improved performance on material with frequent
intra-only frames.

Change-Id: I44a4042c3670ab0d38439d565062a0e2a1ba9d1e
This commit is contained in:
Scott LaVarnway
2015-06-08 03:38:13 -07:00
parent 78b434e8b1
commit c9976b32b4
3 changed files with 17 additions and 13 deletions
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21
vp9/decoder/vp9_decodemv.c
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@@ -596,19 +596,20 @@ void vp9_read_mode_info(VP9Decoder *const pbi, MACROBLOCKD *xd,
MV_REF* frame_mvs = cm->cur_frame->mvs + mi_row * cm->mi_cols + mi_col;
int w, h;
if (frame_is_intra_only(cm))
if (frame_is_intra_only(cm)) {
read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r);
else
} else {
read_inter_frame_mode_info(pbi, xd, tile, mi_row, mi_col, r);
for (h = 0; h < y_mis; ++h) {
MV_REF *const frame_mv = frame_mvs + h * cm->mi_cols;
for (w = 0; w < x_mis; ++w) {
MV_REF *const mv = frame_mv + w;
mv->ref_frame[0] = mi->mbmi.ref_frame[0];
mv->ref_frame[1] = mi->mbmi.ref_frame[1];
mv->mv[0].as_int = mi->mbmi.mv[0].as_int;
mv->mv[1].as_int = mi->mbmi.mv[1].as_int;
for (h = 0; h < y_mis; ++h) {
MV_REF *const frame_mv = frame_mvs + h * cm->mi_cols;
for (w = 0; w < x_mis; ++w) {
MV_REF *const mv = frame_mv + w;
mv->ref_frame[0] = mi->mbmi.ref_frame[0];
mv->ref_frame[1] = mi->mbmi.ref_frame[1];
mv->mv[0].as_int = mi->mbmi.mv[0].as_int;
mv->mv[1].as_int = mi->mbmi.mv[1].as_int;
}
}
}
}