vpx/vp8/common/seg_common.c
Paul Wilkins fe38082f44 Segment Features with 8x8DCT.
Temporary check in to turn off other segment features
tests when #if CONFIG_T8X8 is set as the assignment of
MBs to differnt segments in each case  will conflict.

The 8x8 code will be modified to use the new segment
feature method properly in a later check in.

Increase bits allowed for EOB end stop marker to 6 ready
for 8x8.

Change-Id: I4835bc8d3bf98e1775c3d247d778639c90b01f7f
2011-11-04 11:06:24 +00:00

111 lines
3.4 KiB
C

/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "vp8/common/seg_common.h"
//#if CONFIG_SEGFEATURES
const int segfeaturedata_signed[SEG_LVL_MAX] = {1, 1, 0, 0, 0, 0};
const int vp8_seg_feature_data_bits[SEG_LVL_MAX] = {7, 6, 4, 4, 6, 2};
// These functions provide access to new segment level features.
// Eventually these function may be "optimized out" but for the moment,
// the coding mechanism is still subject to change so these provide a
// convenient single point of change.
int segfeature_active( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id )
{
// Return true if mask bit set and segmentation enabled.
return ( xd->segmentation_enabled &&
( xd->segment_feature_mask[segment_id] &
(0x01 << feature_id) ) );
}
void clearall_segfeatures( MACROBLOCKD *xd )
{
vpx_memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data));
vpx_memset(xd->segment_feature_mask, 0, sizeof(xd->segment_feature_mask));
}
void enable_segfeature( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id )
{
xd->segment_feature_mask[segment_id] |= (0x01 << feature_id);
}
void disable_segfeature( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id )
{
xd->segment_feature_mask[segment_id] &= ~(1 << feature_id);
}
int seg_feature_data_bits( SEG_LVL_FEATURES feature_id )
{
return vp8_seg_feature_data_bits[feature_id];
}
int is_segfeature_signed( SEG_LVL_FEATURES feature_id )
{
return ( segfeaturedata_signed[feature_id] );
}
void clear_segdata( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id)
{
xd->segment_feature_data[segment_id][feature_id] = 0;
}
void set_segdata( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id,
int seg_data )
{
xd->segment_feature_data[segment_id][feature_id] = seg_data;
}
int get_segdata( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id )
{
return xd->segment_feature_data[segment_id][feature_id];
}
void clear_segref( MACROBLOCKD *xd, int segment_id )
{
xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] = 0;
}
void set_segref( MACROBLOCKD *xd,
int segment_id,
MV_REFERENCE_FRAME ref_frame )
{
xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] |=
(1 << ref_frame);
}
int check_segref( MACROBLOCKD *xd,
int segment_id,
MV_REFERENCE_FRAME ref_frame )
{
return ( xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
(1 << ref_frame) ) ? 1 : 0;
}
int check_segref_inter(MACROBLOCKD *xd, int segment_id)
{
return ( xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
~(1 << INTRA_FRAME) ) ? 1 : 0;
}
// TBD? Functions to read and write segment data with range / validity checking