1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vp9/common/vp9_seg_common.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,85 @@
1.4 +/*
1.5 + * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +#include <assert.h>
1.15 +
1.16 +#include "vp9/common/vp9_blockd.h"
1.17 +#include "vp9/common/vp9_loopfilter.h"
1.18 +#include "vp9/common/vp9_seg_common.h"
1.19 +#include "vp9/common/vp9_quant_common.h"
1.20 +
1.21 +static const int seg_feature_data_signed[SEG_LVL_MAX] = { 1, 1, 0, 0 };
1.22 +
1.23 +static const int seg_feature_data_max[SEG_LVL_MAX] = {
1.24 + MAXQ, MAX_LOOP_FILTER, 3, 0 };
1.25 +
1.26 +// These functions provide access to new segment level features.
1.27 +// Eventually these function may be "optimized out" but for the moment,
1.28 +// the coding mechanism is still subject to change so these provide a
1.29 +// convenient single point of change.
1.30 +
1.31 +int vp9_segfeature_active(const struct segmentation *seg, int segment_id,
1.32 + SEG_LVL_FEATURES feature_id) {
1.33 + return seg->enabled &&
1.34 + (seg->feature_mask[segment_id] & (1 << feature_id));
1.35 +}
1.36 +
1.37 +void vp9_clearall_segfeatures(struct segmentation *seg) {
1.38 + vp9_zero(seg->feature_data);
1.39 + vp9_zero(seg->feature_mask);
1.40 +}
1.41 +
1.42 +void vp9_enable_segfeature(struct segmentation *seg, int segment_id,
1.43 + SEG_LVL_FEATURES feature_id) {
1.44 + seg->feature_mask[segment_id] |= 1 << feature_id;
1.45 +}
1.46 +
1.47 +void vp9_disable_segfeature(struct segmentation *seg, int segment_id,
1.48 + SEG_LVL_FEATURES feature_id) {
1.49 + seg->feature_mask[segment_id] &= ~(1 << feature_id);
1.50 +}
1.51 +
1.52 +int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id) {
1.53 + return seg_feature_data_max[feature_id];
1.54 +}
1.55 +
1.56 +int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id) {
1.57 + return seg_feature_data_signed[feature_id];
1.58 +}
1.59 +
1.60 +void vp9_clear_segdata(struct segmentation *seg, int segment_id,
1.61 + SEG_LVL_FEATURES feature_id) {
1.62 + seg->feature_data[segment_id][feature_id] = 0;
1.63 +}
1.64 +
1.65 +void vp9_set_segdata(struct segmentation *seg, int segment_id,
1.66 + SEG_LVL_FEATURES feature_id, int seg_data) {
1.67 + assert(seg_data <= seg_feature_data_max[feature_id]);
1.68 + if (seg_data < 0) {
1.69 + assert(seg_feature_data_signed[feature_id]);
1.70 + assert(-seg_data <= seg_feature_data_max[feature_id]);
1.71 + }
1.72 +
1.73 + seg->feature_data[segment_id][feature_id] = seg_data;
1.74 +}
1.75 +
1.76 +int vp9_get_segdata(const struct segmentation *seg, int segment_id,
1.77 + SEG_LVL_FEATURES feature_id) {
1.78 + return seg->feature_data[segment_id][feature_id];
1.79 +}
1.80 +
1.81 +
1.82 +const vp9_tree_index vp9_segment_tree[TREE_SIZE(MAX_SEGMENTS)] = {
1.83 + 2, 4, 6, 8, 10, 12,
1.84 + 0, -1, -2, -3, -4, -5, -6, -7
1.85 +};
1.86 +
1.87 +
1.88 +// TBD? Functions to read and write segment data with range / validity checking
