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Use b_width_log2_ in partition type parse 

Replace mi_width/height_log2 with b_width/height_log2 in partition
type parsing at bit-stream writing stage. This allows parsing
resolution at 4x4 block level and makes the 4x4/4x8/8x4 partition
coding consistent with other superblock types.

Change-Id: I7db3617ea042e0db2dc898999b0c323bff91a22f
This commit is contained in:
Jingning Han 2013-05-16 13:30:00 -07:00
Родитель b10b887907
Коммит 3819f11b28
1 изменённых файлов: 8 добавлений и 12 удалений
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20
vp9/encoder/vp9_bitstream.c
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@ -887,8 +887,8 @@ static void write_modes_sb(VP9_COMP *cpi, MODE_INFO *m, vp9_writer *bc,
MACROBLOCKD *xd = &cpi->mb.e_mbd;
const int mis = cm->mode_info_stride;
int bwl, bhl;
int bw, bh;
int bsl = mi_width_log2(bsize), bs = (1 << bsl) / 2;
int bsl = b_width_log2(bsize);
int bs = (1 << bsl) / 4; // mode_info step for subsize
int n;
PARTITION_TYPE partition;
BLOCK_SIZE_TYPE subsize;
@ -896,10 +896,8 @@ static void write_modes_sb(VP9_COMP *cpi, MODE_INFO *m, vp9_writer *bc,
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
return;
bwl = mi_width_log2(m->mbmi.sb_type);
bhl = mi_height_log2(m->mbmi.sb_type);
bw = 1 << bwl;
bh = 1 << bhl;
bwl = b_width_log2(m->mbmi.sb_type);
bhl = b_height_log2(m->mbmi.sb_type);
// parse the partition type
if ((bwl == bsl) && (bhl == bsl))
@ -914,8 +912,6 @@ static void write_modes_sb(VP9_COMP *cpi, MODE_INFO *m, vp9_writer *bc,
assert(0);
#if CONFIG_AB4X4
if (bsize == BLOCK_SIZE_SB8X8 && m->mbmi.sb_type < BLOCK_SIZE_SB8X8)
partition = PARTITION_SPLIT;
if (bsize < BLOCK_SIZE_SB8X8)
if (xd->ab_index != 0)
return;
@ -943,13 +939,13 @@ static void write_modes_sb(VP9_COMP *cpi, MODE_INFO *m, vp9_writer *bc,
break;
case PARTITION_HORZ:
write_modes_b(cpi, m, bc, tok, tok_end, mi_row, mi_col);
if ((mi_row + bh) < cm->mi_rows)
write_modes_b(cpi, m + bh * mis, bc, tok, tok_end, mi_row + bh, mi_col);
if ((mi_row + bs) < cm->mi_rows)
write_modes_b(cpi, m + bs * mis, bc, tok, tok_end, mi_row + bs, mi_col);
break;
case PARTITION_VERT:
write_modes_b(cpi, m, bc, tok, tok_end, mi_row, mi_col);
if ((mi_col + bw) < cm->mi_cols)
write_modes_b(cpi, m + bw, bc, tok, tok_end, mi_row, mi_col + bw);
if ((mi_col + bs) < cm->mi_cols)
write_modes_b(cpi, m + bs, bc, tok, tok_end, mi_row, mi_col + bs);
break;
case PARTITION_SPLIT:
for (n = 0; n < 4; n++) {