1 files changed, 49 insertions, 0 deletions
diff --git a/src/utils/segmentation_map.cc b/src/utils/segmentation_map.cc
new file mode 100644
index 0000000..4284ca2
--- /dev/null
+++ b/src/utils/segmentation_map.cc
@@ -0,0 +1,49 @@
+// Copyright 2019 The libgav1 Authors
+//
+// 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.
+
+#include "src/utils/segmentation_map.h"
+
+#include <cassert>
+#include <cstring>
+#include <new>
+
+namespace libgav1 {
+
+bool SegmentationMap::Allocate(int32_t rows4x4, int32_t columns4x4) {
+  rows4x4_ = rows4x4;
+  columns4x4_ = columns4x4;
+  segment_id_buffer_.reset(new (std::nothrow) int8_t[rows4x4_ * columns4x4_]);
+  if (segment_id_buffer_ == nullptr) return false;
+  segment_id_.Reset(rows4x4_, columns4x4_, segment_id_buffer_.get());
+  return true;
+}
+
+void SegmentationMap::Clear() {
+  memset(segment_id_buffer_.get(), 0, rows4x4_ * columns4x4_);
+}
+
+void SegmentationMap::CopyFrom(const SegmentationMap& from) {
+  assert(rows4x4_ == from.rows4x4_ && columns4x4_ == from.columns4x4_);
+  memcpy(segment_id_buffer_.get(), from.segment_id_buffer_.get(),
+         rows4x4_ * columns4x4_);
+}
+
+void SegmentationMap::FillBlock(int row4x4, int column4x4, int block_width4x4,
+                                int block_height4x4, int8_t segment_id) {
+  for (int y = 0; y < block_height4x4; ++y) {
+    memset(&segment_id_[row4x4 + y][column4x4], segment_id, block_width4x4);
+  }
+}
+
+}  // namespace libgav1