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/*
* 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};
// 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 is_segfeature_signed( SEG_LVL_FEATURES feature_id )
{
return ( segfeaturedata_signed[feature_id] );
}
// TBD? Functions to read and write segment data with range / validity checking
#endif
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