Add representation of an image.

Libraries/graphics/CMakeLists.txt

@@ -8,6 +8,7 @@
 #
 
 add_library(graphics SHARED
+            Sources/Image.cpp
             Sources/PixelFormat.cpp
             )
 

Libraries/graphics/Headers/graphics/Image.h

@@ -0,0 +1,64 @@
+/**
+ Copyright (c) 2015-present, Facebook, Inc.
+ All rights reserved.
+
+ This source code is licensed under the BSD-style license found in the
+ LICENSE file in the root directory of this source tree. An additional grant
+ of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#ifndef __graphics_Image_h
+#define __graphics_Image_h
+
+#include <graphics/PixelFormat.h>
+
+#include <cstddef>
+#include <cstdint>
+
+namespace graphics {
+
+/*
+ * Contains an image data and metadata.
+ */
+class Image {
+private:
+    size_t               _width;
+    size_t               _height;
+
+private:
+    PixelFormat          _format;
+    std::vector<uint8_t> _data;
+
+public:
+    Image(size_t width, size_t height, PixelFormat format, std::vector<uint8_t> const &data);
+
+public:
+    /*
+     * The width of the image, in pixels.
+     */
+    size_t width() const
+    { return _width; }
+
+    /*
+     * The height of the image, in pixels.
+     */
+    size_t height() const
+    { return _height; }
+
+public:
+    /*
+     * The pixel format of the image data.
+     */
+    PixelFormat const &format() const
+    { return _format; }
+
+    /*
+     * The alpha channel.
+     */
+    std::vector<uint8_t> const &data() const
+    { return _data; }
+};
+
+}
+
+#endif  // !__graphics_Image_h

Libraries/graphics/Sources/Image.cpp

@@ -0,0 +1,24 @@
+/**
+ Copyright (c) 2015-present, Facebook, Inc.
+ All rights reserved.
+
+ This source code is licensed under the BSD-style license found in the
+ LICENSE file in the root directory of this source tree. An additional grant
+ of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#include <graphics/Image.h>
+#include <cassert>
+
+using graphics::Image;
+
+Image::
+Image(size_t width, size_t height, PixelFormat format, std::vector<uint8_t> const &data) :
+    _width (width),
+    _height(height),
+    _format(format),
+    _data  (data)
+{
+    assert(data.size() == _width * _height * _format.bytesPerPixel());
+}
+