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diff --git a/src/base/imgwriter.cc b/src/base/imgwriter.cc
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+/*
+ * Copyright (c) 2017 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Giacomo Travaglini
+ */
+
+#include "base/imgwriter.hh"
+#include "base/bmpwriter.hh"
+#include "base/misc.hh"
+
+#include "config/use_png.hh"
+
+#if USE_PNG
+#include "base/pngwriter.hh"
+#endif
+
+std::unique_ptr<ImgWriter>
+createImgWriter(Enums::ImageFormat type, const FrameBuffer *fb)
+{
+    switch (type) {
+      case Enums::Auto:
+        // The Auto option allows gem5 to choose automatically the
+        // writer type, and it will choose for the best fit in
+        // performance.
+        // gem5 will try PNG first, and it will fallback to BMP if not
+        // available.
+
+        /* FALLTHROUGH */
+#if USE_PNG
+      case Enums::Png:
+        return std::unique_ptr<PngWriter>(new PngWriter(fb));
+#endif
+      case Enums::Bitmap:
+        return std::unique_ptr<BmpWriter>(new BmpWriter(fb));
+      default:
+        warn("Invalid Image Type specified, defaulting to Bitmap\n");
+        return std::unique_ptr<BmpWriter>(new BmpWriter(fb));
+    }
+}