1 files changed, 50 insertions, 0 deletions
diff --git a/src/codec/SkColorTable.h b/src/codec/SkColorTable.h
new file mode 100644
index 0000000000..57681a9049
--- /dev/null
+++ b/src/codec/SkColorTable.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkColorTable_DEFINED
+#define SkColorTable_DEFINED
+
+#include "SkColor.h"
+#include "SkRefCnt.h"
+
+/** \class SkColorTable
+
+    SkColorTable holds an array SkPMColors (premultiplied 32-bit colors) used by
+    8-bit bitmaps, where the bitmap bytes are interpreted as indices into the colortable.
+
+    SkColorTable is thread-safe.
+*/
+class SkColorTable : public SkRefCnt {
+public:
+    /** Copy up to 256 colors into a new SkColorTable.
+     */
+    SkColorTable(const SkPMColor colors[], int count);
+    ~SkColorTable() override;
+
+    /** Returns the number of colors in the table.
+     */
+    int count() const { return fCount; }
+
+    /** Returns the specified color from the table. In the debug build, this asserts that
+     *  the index is in range (0 <= index < count).
+     */
+    SkPMColor operator[](int index) const {
+        SkASSERT(fColors != nullptr && (unsigned)index < (unsigned)fCount);
+        return fColors[index];
+    }
+
+    /** Return the array of colors for reading. */
+    const SkPMColor* readColors() const { return fColors; }
+
+private:
+    SkPMColor*  fColors;
+    int         fCount;
+
+    typedef SkRefCnt INHERITED;
+};
+
+#endif