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Improved subset block search

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Improved the subset block search and fill.  (about 3% improvement for
32 bit)  Modified/merged the code in order to create
vp8_read_mb_modes_mv which can decode the modes/mvs on a macroblock
level. This will allow the decode loop (in the future) to decode
modes/mvs on a frame, row, or mb level.

Change-Id: If637d994b508792f846d39b5d44a7bf9aa5cddf3
This commit is contained in:
Scott LaVarnway
2010-09-09 14:42:48 -04:00
parent c2140b8af1
commit c5fb0eb8d9
6 changed files with 422 additions and 470 deletions
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20
vp8/decoder/decodframe.c
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@@ -23,7 +23,7 @@
#include "quant_common.h"
#include "setupintrarecon.h"
#include "demode.h"
#include "decodemv.h"
#include "extend.h"
#include "vpx_mem/vpx_mem.h"
@@ -151,15 +151,11 @@ static void clamp_mv_to_umv_border(MV *mv, const MACROBLOCKD *xd)
/* A version of the above function for chroma block MVs.*/
static void clamp_uvmv_to_umv_border(MV *mv, const MACROBLOCKD *xd)
{
if (2*mv->col < (xd->mb_to_left_edge - (19 << 3)))
mv->col = (xd->mb_to_left_edge - (16 << 3)) >> 1;
else if (2*mv->col > xd->mb_to_right_edge + (18 << 3))
mv->col = (xd->mb_to_right_edge + (16 << 3)) >> 1;
mv->col = (2*mv->col < (xd->mb_to_left_edge - (19 << 3))) ? (xd->mb_to_left_edge - (16 << 3)) >> 1 : mv->col;
mv->col = (2*mv->col > xd->mb_to_right_edge + (18 << 3)) ? (xd->mb_to_right_edge + (16 << 3)) >> 1 : mv->col;
if (2*mv->row < (xd->mb_to_top_edge - (19 << 3)))
mv->row = (xd->mb_to_top_edge - (16 << 3)) >> 1;
else if (2*mv->row > xd->mb_to_bottom_edge + (18 << 3))
mv->row = (xd->mb_to_bottom_edge + (16 << 3)) >> 1;
mv->row = (2*mv->row < (xd->mb_to_top_edge - (19 << 3))) ? (xd->mb_to_top_edge - (16 << 3)) >> 1 : mv->row;
mv->row = (2*mv->row > xd->mb_to_bottom_edge + (18 << 3)) ? (xd->mb_to_bottom_edge + (16 << 3)) >> 1 : mv->row;
}
static void clamp_mvs(MACROBLOCKD *xd)
@@ -838,10 +834,8 @@ int vp8_decode_frame(VP8D_COMP *pbi)
// Read the mb_no_coeff_skip flag
pc->mb_no_coeff_skip = (int)vp8_read_bit(bc);
if (pc->frame_type == KEY_FRAME)
vp8_kfread_modes(pbi);
else
vp8_decode_mode_mvs(pbi);
vp8_decode_mode_mvs(pbi);
vpx_memset(pc->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES) * pc->mb_cols);