41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
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/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vp8/common/seg_common.h"
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// These functions provide access to new segment level features.
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// Eventually these function may be "optimized out" but for the moment,
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// the coding mechanism is still subject to change so these provide a
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// convenient single point of change.
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int segfeature_active( MACROBLOCKD *xd,
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int segment_id,
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SEG_LVL_FEATURES feature_id )
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{
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// Return true if mask bit set and segmentation enabled.
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return ( xd->segmentation_enabled &&
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( xd->segment_feature_mask[segment_id] &
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(0x01 << feature_id) ) );
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}
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void enable_segfeature( MACROBLOCKD *xd,
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int segment_id,
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SEG_LVL_FEATURES feature_id )
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{
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xd->segment_feature_mask[segment_id] |= (0x01 << feature_id);
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}
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void disable_segfeature( MACROBLOCKD *xd,
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int segment_id,
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SEG_LVL_FEATURES feature_id )
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{
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xd->segment_feature_mask[segment_id] &= ~(1 << feature_id);
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}
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// TBD? Functions to read and write segment data with range / validity checking
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