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changed UV plane loop filtering for TX_8X8

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In commit 9a1d73d, loop filtering was added for UV 4x4 boundaries
when TX_8X8 is used by a MB. This commit further refined the decision
to be based on the actual transform used for the UV planes. When
UV planes use 4x4 transform, i.e. when prediction mode used is either
I8X8_PRED or SPLITMV, UV planes are filtered on 4x4 boundaries, and no
filtering is applied on 4x4 block boundaries when UV planes use 8X8
transform.

Change-Id: Ibb404face0a1d129b4b4abaf67c55d82e8df8bec
This commit is contained in:
Yaowu Xu 2013-01-14 09:28:35 -08:00
parent 113005b11d
commit ad9a16ed17
1 changed files with 24 additions and 14 deletions
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38
vp9/common/vp9_loopfilter.c
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@ -232,11 +232,11 @@ void vp9_loop_filter_frame(VP9_COMMON *cm,
/* vp9_filter each macro block */
for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) {
for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) {
const int mode_index = lfi_n->mode_lf_lut[mode_info_context->mbmi.mode];
const MB_PREDICTION_MODE mode = mode_info_context->mbmi.mode;
const int mode_index = lfi_n->mode_lf_lut[mode];
const int seg = mode_info_context->mbmi.segment_id;
const int ref_frame = mode_info_context->mbmi.ref_frame;
const int filter_level = lfi_n->lvl[seg][ref_frame][mode_index];
if (filter_level) {
const int skip_lf = mb_lf_skip(&mode_info_context->mbmi);
const int tx_size = mode_info_context->mbmi.txfm_size;
@ -255,19 +255,24 @@ void vp9_loop_filter_frame(VP9_COMMON *cm,
#if CONFIG_WIDERLPF
if (tx_size >= TX_16X16)
vp9_lpf_mbv_w(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
post->uv_stride, &lfi);
else
#endif
vp9_loop_filter_mbv(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
post->uv_stride, &lfi);
}
if (!skip_lf) {
if (tx_size >= TX_8X8)
vp9_loop_filter_bv8x8(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
else
if (tx_size >= TX_8X8) {
if (tx_size == TX_8X8 && (mode == I8X8_PRED || mode == SPLITMV))
vp9_loop_filter_bv8x8(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
else
vp9_loop_filter_bv8x8(y_ptr, NULL, NULL, post->y_stride,
post->uv_stride, &lfi);
} else {
vp9_loop_filter_bv(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
}
}
/* don't apply across umv border */
@ -279,19 +284,24 @@ void vp9_loop_filter_frame(VP9_COMMON *cm,
#if CONFIG_WIDERLPF
if (tx_size >= TX_16X16)
vp9_lpf_mbh_w(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
post->uv_stride, &lfi);
else
#endif
vp9_loop_filter_mbh(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
post->uv_stride, &lfi);
}
if (!skip_lf) {
if (tx_size >= TX_8X8)
vp9_loop_filter_bh8x8(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
else
if (tx_size >= TX_8X8) {
if (tx_size == TX_8X8 && (mode == I8X8_PRED || mode == SPLITMV))
vp9_loop_filter_bh8x8(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
else
vp9_loop_filter_bh8x8(y_ptr, NULL, NULL, post->y_stride,
post->uv_stride, &lfi);
} else {
vp9_loop_filter_bh(y_ptr, u_ptr, v_ptr, post->y_stride,
post->uv_stride, &lfi);
}
}
} else {
// FIXME: Not 8x8 aware