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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 <assert.h>
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_loopfilter.h"
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_quant_common.h"
static const int seg_feature_data_signed[SEG_LVL_MAX] = { 1, 1, 0, 0 };
static const int seg_feature_data_max[SEG_LVL_MAX] = {
MAXQ, MAX_LOOP_FILTER, 3, 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 vp9_segfeature_active(const struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id) {
return seg->enabled &&
(seg->feature_mask[segment_id] & (1 << feature_id));
}
void vp9_clearall_segfeatures(struct segmentation *seg) {
vp9_zero(seg->feature_data);
vp9_zero(seg->feature_mask);
}
void vp9_enable_segfeature(struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id) {
seg->feature_mask[segment_id] |= 1 << feature_id;
}
int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id) {
return seg_feature_data_max[feature_id];
}
int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id) {
return seg_feature_data_signed[feature_id];
}
void vp9_set_segdata(struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id, int seg_data) {
assert(seg_data <= seg_feature_data_max[feature_id]);
if (seg_data < 0) {
assert(seg_feature_data_signed[feature_id]);
assert(-seg_data <= seg_feature_data_max[feature_id]);
}
seg->feature_data[segment_id][feature_id] = seg_data;
}
int vp9_get_segdata(const struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id) {
return seg->feature_data[segment_id][feature_id];
}
const vp9_tree_index vp9_segment_tree[TREE_SIZE(MAX_SEGMENTS)] = {
2, 4, 6, 8, 10, 12,
0, -1, -2, -3, -4, -5, -6, -7
};
// TBD? Functions to read and write segment data with range / validity checking
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