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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"
const int segfeaturedata_signed[SEG_LVL_MAX] = {1, 1, 0, 0, 0, 0};
const int vp8_seg_feature_data_bits[SEG_LVL_MAX] =
{QINDEX_BITS, 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];
}
#if CONFIG_FEATUREUPDATES
int old_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->old_segment_feature_mask[segment_id] &
(0x01 << feature_id) ) );
}
int get_old_segdata( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id )
{
return xd->old_segment_feature_data[segment_id][feature_id];
}
int segfeature_changed( MACROBLOCKD *xd,
int segment_id,
SEG_LVL_FEATURES feature_id )
{
// Return true if mask bit or data is different from last time
return
( xd->segmentation_enabled &&
(
(xd->old_segment_feature_mask[segment_id] & (1 << feature_id) ) !=
(xd->segment_feature_mask[segment_id] & (1 << feature_id) )
|| xd->old_segment_feature_data[segment_id][feature_id] !=
xd->segment_feature_data[segment_id][feature_id]
)
);
}
void save_segment_info ( MACROBLOCKD *xd )
{
int i,j;
for (i = 0; i < MAX_MB_SEGMENTS; i++)
{
xd->old_segment_feature_mask[i] = xd->segment_feature_mask[i];
// For each segmentation codable feature...
for (j = 0; j < SEG_LVL_MAX; j++)
{
xd->old_segment_feature_data[i][j]=xd->segment_feature_data[i][j];
}
}
}
#endif
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;
}
int get_seg_tx_type(MACROBLOCKD *xd, int segment_id)
{
if ( segfeature_active(xd, segment_id, SEG_LVL_TRANSFORM) )
return get_segdata(xd, segment_id, SEG_LVL_TRANSFORM);
else
return TX_4X4;
}
// TBD? Functions to read and write segment data with range / validity checking
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