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authorHaixia Shi <hshi@chromium.org>2015-11-02 10:54:29 -0800
committerHaixia Shi <hshi@chromium.org>2015-11-02 11:04:48 -0800
commitaa2f4a5eec7f4117b9487a415739634007254822 (patch)
treefbc149dfc88bfdc8708636278f42da932ed5e734 /separate_rects.h
parentf3d360328e724c908827716d442c226e3128ff5a (diff)
downloaddrm_hwcomposer-aa2f4a5eec7f4117b9487a415739634007254822.tar.gz
drm_hwcomposer-aa2f4a5eec7f4117b9487a415739634007254822.tar.xz
drm_hwcomposer: fix spelling of "separate".
It is spelled "separate", not "seperate". Change-Id: Id92d12aba42989a8a72e4596d425b2a9eea4e5ec
Diffstat (limited to 'separate_rects.h')
-rw-r--r--separate_rects.h169
1 files changed, 169 insertions, 0 deletions
diff --git a/separate_rects.h b/separate_rects.h
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+++ b/separate_rects.h
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+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DRM_HWCOMPOSER_SEPARATE_RECTS_H_
+#define DRM_HWCOMPOSER_SEPARATE_RECTS_H_
+
+#include <stdint.h>
+
+#include <sstream>
+#include <vector>
+
+namespace separate_rects {
+
+template <typename TFloat>
+struct Rect {
+ union {
+ struct {
+ TFloat left, top, right, bottom;
+ };
+ struct {
+ TFloat x1, y1, x2, y2;
+ };
+ TFloat bounds[4];
+ };
+
+ typedef TFloat TNum;
+
+ Rect() {
+ }
+
+ Rect(TFloat xx1, TFloat yy1, TFloat xx2, TFloat yy2)
+ : x1(xx1), y1(yy1), x2(xx2), y2(yy2) {
+ }
+
+ template <typename T>
+ Rect(const Rect<T> &rhs) {
+ for (int i = 0; i < 4; i++)
+ bounds[i] = rhs.bounds[i];
+ }
+
+ template <typename T>
+ Rect<TFloat> &operator=(const Rect<T> &rhs) {
+ for (int i = 0; i < 4; i++)
+ bounds[i] = rhs.bounds[i];
+ return *this;
+ }
+
+ bool operator==(const Rect &rhs) const {
+ for (int i = 0; i < 4; i++) {
+ if (bounds[i] != rhs.bounds[i])
+ return false;
+ }
+
+ return true;
+ }
+
+ TFloat width() const {
+ return bounds[2] - bounds[0];
+ }
+
+ TFloat height() const {
+ return bounds[3] - bounds[1];
+ }
+
+ TFloat area() const {
+ return width() * height();
+ }
+
+ void Dump(std::ostringstream *out) const {
+ *out << "[x/y/w/h]=" << left << "/" << top << "/" << width() << "/"
+ << height();
+ }
+};
+
+template <typename TUInt>
+struct IdSet {
+ public:
+ typedef TUInt TId;
+
+ IdSet() : bitset(0) {
+ }
+
+ IdSet(TId id) : bitset(0) {
+ add(id);
+ }
+
+ void add(TId id) {
+ bitset |= ((TUInt)1) << id;
+ }
+
+ void subtract(TId id) {
+ bitset &= ~(((TUInt)1) << id);
+ }
+
+ bool isEmpty() const {
+ return bitset == 0;
+ }
+
+ TUInt getBits() const {
+ return bitset;
+ }
+
+ bool operator==(const IdSet<TId> &rhs) const {
+ return bitset == rhs.bitset;
+ }
+
+ bool operator<(const IdSet<TId> &rhs) const {
+ return bitset < rhs.bitset;
+ }
+
+ IdSet<TId> operator|(const IdSet<TId> &rhs) const {
+ IdSet ret;
+ ret.bitset = bitset | rhs.bitset;
+ return ret;
+ }
+
+ IdSet<TId> operator|(TId id) const {
+ IdSet<TId> ret;
+ ret.bitset = bitset;
+ ret.add(id);
+ return ret;
+ }
+
+ static const int max_elements = sizeof(TId) * 8;
+
+ private:
+ TUInt bitset;
+};
+
+template <typename TId, typename TNum>
+struct RectSet {
+ IdSet<TId> id_set;
+ Rect<TNum> rect;
+
+ RectSet(const IdSet<TId> &i, const Rect<TNum> &r) : id_set(i), rect(r) {
+ }
+
+ bool operator==(const RectSet<TId, TNum> &rhs) const {
+ return id_set == rhs.id_set && rect == rhs.rect;
+ }
+};
+
+// Separates up to a maximum of 64 input rectangles into mutually non-
+// overlapping rectangles that cover the exact same area and outputs those non-
+// overlapping rectangles. Each output rectangle also includes the set of input
+// rectangle indices that overlap the output rectangle encoded in a bitset. For
+// example, an output rectangle that overlaps input rectangles in[0], in[1], and
+// in[4], the bitset would be (ommitting leading zeroes) 10011.
+void separate_frects_64(const std::vector<Rect<float>> &in,
+ std::vector<RectSet<uint64_t, float>> *out);
+void separate_rects_64(const std::vector<Rect<int>> &in,
+ std::vector<RectSet<uint64_t, int>> *out);
+
+} // namespace separate_rects
+
+#endif