The Tor Browser / file comparison
comparison: media/libvpx/vp9/common/vp9_seg_common.c
media/libvpx/vp9/common/vp9_seg_common.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:77781b1ce3e9 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <assert.h> | |
| 12 | |
| 13 #include "vp9/common/vp9_blockd.h" | |
| 14 #include "vp9/common/vp9_loopfilter.h" | |
| 15 #include "vp9/common/vp9_seg_common.h" | |
| 16 #include "vp9/common/vp9_quant_common.h" | |
| 17 | |
| 18 static const int seg_feature_data_signed[SEG_LVL_MAX] = { 1, 1, 0, 0 }; | |
| 19 | |
| 20 static const int seg_feature_data_max[SEG_LVL_MAX] = { | |
| 21 MAXQ, MAX_LOOP_FILTER, 3, 0 }; | |
| 22 | |
| 23 // These functions provide access to new segment level features. | |
| 24 // Eventually these function may be "optimized out" but for the moment, | |
| 25 // the coding mechanism is still subject to change so these provide a | |
| 26 // convenient single point of change. | |
| 27 | |
| 28 int vp9_segfeature_active(const struct segmentation *seg, int segment_id, | |
| 29 SEG_LVL_FEATURES feature_id) { | |
| 30 return seg->enabled && | |
| 31 (seg->feature_mask[segment_id] & (1 << feature_id)); | |
| 32 } | |
| 33 | |
| 34 void vp9_clearall_segfeatures(struct segmentation *seg) { | |
| 35 vp9_zero(seg->feature_data); | |
| 36 vp9_zero(seg->feature_mask); | |
| 37 } | |
| 38 | |
| 39 void vp9_enable_segfeature(struct segmentation *seg, int segment_id, | |
| 40 SEG_LVL_FEATURES feature_id) { | |
| 41 seg->feature_mask[segment_id] |= 1 << feature_id; | |
| 42 } | |
| 43 | |
| 44 void vp9_disable_segfeature(struct segmentation *seg, int segment_id, | |
| 45 SEG_LVL_FEATURES feature_id) { | |
| 46 seg->feature_mask[segment_id] &= ~(1 << feature_id); | |
| 47 } | |
| 48 | |
| 49 int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id) { | |
| 50 return seg_feature_data_max[feature_id]; | |
| 51 } | |
| 52 | |
| 53 int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id) { | |
| 54 return seg_feature_data_signed[feature_id]; | |
| 55 } | |
| 56 | |
| 57 void vp9_clear_segdata(struct segmentation *seg, int segment_id, | |
| 58 SEG_LVL_FEATURES feature_id) { | |
| 59 seg->feature_data[segment_id][feature_id] = 0; | |
| 60 } | |
| 61 | |
| 62 void vp9_set_segdata(struct segmentation *seg, int segment_id, | |
| 63 SEG_LVL_FEATURES feature_id, int seg_data) { | |
| 64 assert(seg_data <= seg_feature_data_max[feature_id]); | |
| 65 if (seg_data < 0) { | |
| 66 assert(seg_feature_data_signed[feature_id]); | |
| 67 assert(-seg_data <= seg_feature_data_max[feature_id]); | |
| 68 } | |
| 69 | |
| 70 seg->feature_data[segment_id][feature_id] = seg_data; | |
| 71 } | |
| 72 | |
| 73 int vp9_get_segdata(const struct segmentation *seg, int segment_id, | |
| 74 SEG_LVL_FEATURES feature_id) { | |
| 75 return seg->feature_data[segment_id][feature_id]; | |
| 76 } | |
| 77 | |
| 78 | |
| 79 const vp9_tree_index vp9_segment_tree[TREE_SIZE(MAX_SEGMENTS)] = { | |
| 80 2, 4, 6, 8, 10, 12, | |
| 81 0, -1, -2, -3, -4, -5, -6, -7 | |
| 82 }; | |
| 83 | |
| 84 | |
| 85 // TBD? Functions to read and write segment data with range / validity checking |
