shithub: libvpx

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Getting rid of b_{width, height}_log2 calls in non-420 loop filter.

Using num_{4x4, 8x8}_blocks_{wide, high}_lookup instead.

Change-Id: I66a7ab807fa57395253b2d0e636c2479fa8c4adf

--- a/vp9/common/vp9_loopfilter.c

+++ b/vp9/common/vp9_loopfilter.c

@@ -989,15 +989,16 @@

     // Determine the vertical edges that need filtering

     for (c = 0; c < MI_BLOCK_SIZE && mi_col + c < cm->mi_cols; c += col_step) {

       const MODE_INFO *mi = mi_8x8[c];

+      const BLOCK_SIZE sb_type = mi[0].mbmi.sb_type;

       const int skip_this = mi[0].mbmi.skip_coeff

                             && is_inter_block(&mi[0].mbmi);

       // left edge of current unit is block/partition edge -> no skip

-      const int block_edge_left = b_width_log2(mi[0].mbmi.sb_type) ?

-          !(c & ((1 << (b_width_log2(mi[0].mbmi.sb_type)-1)) - 1)) : 1;

+      const int block_edge_left = (num_4x4_blocks_wide_lookup[sb_type] > 1) ?

+          !(c & (num_8x8_blocks_wide_lookup[sb_type] - 1)) : 1;

       const int skip_this_c = skip_this && !block_edge_left;

       // top edge of current unit is block/partition edge -> no skip

-      const int block_edge_above = b_height_log2(mi[0].mbmi.sb_type) ?

-          !(r & ((1 << (b_height_log2(mi[0].mbmi.sb_type)-1)) - 1)) : 1;

+      const int block_edge_above = (num_4x4_blocks_high_lookup[sb_type] > 1) ?

+          !(r & (num_8x8_blocks_high_lookup[sb_type] - 1)) : 1;

       const int skip_this_r = skip_this && !block_edge_above;

       const TX_SIZE tx_size = (plane->plane_type == PLANE_TYPE_UV)

                             ? get_uv_tx_size(&mi[0].mbmi)