/*

 *  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.

void vp9_clearall_segfeatures(struct segmentation *seg) {

  vp9_zero(seg->feature_data);

  vp9_zero(seg->feature_mask);

  seg->aq_av_offset = 0;

}

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;

}

const vpx_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