ref: 01ce04bc06d34a3d58cd900664d233f41e6e06d0
dir: /vp8/common/seg_common.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"
// 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 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);
}
// TBD? Functions to read and write segment data with range / validity checking