Add missing skia_surface.cpp file

src/she/skia/skia_surface.cpp

@@ -0,0 +1,61 @@
+// SHE library
+// Copyright (C) 2016  David Capello
+//
+// This file is released under the terms of the MIT license.
+// Read LICENSE.txt for more information.
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "she/skia/skia_surface.h"
+
+#include "base/file_handle.h"
+
+#include "SkCodec.h"
+#include "SkPixelRef.h"
+#include "SkStream.h"
+
+namespace she {
+
+sk_sp<SkColorSpace> SkiaSurface::m_colorSpace;
+
+// static
+Surface* SkiaSurface::loadSurface(const char* filename)
+{
+  base::FileHandle fp(base::open_file_with_exception(filename, "rb"));
+
+  SkAutoTDelete<SkCodec> codec(
+    SkCodec::NewFromStream(
+      new SkFILEStream(fp.get(), SkFILEStream::kCallerRetains_Ownership)));
+  if (!codec)
+    return nullptr;
+
+  SkImageInfo info = codec->getInfo()
+    .makeColorType(kN32_SkColorType)
+    .makeAlphaType(kPremul_SkAlphaType)
+    .makeColorSpace(colorSpace());
+  SkBitmap bm;
+  if (!bm.tryAllocPixels(info))
+    return nullptr;
+
+  const SkCodec::Result r = codec->getPixels(info, bm.getPixels(), bm.rowBytes());
+  if (r != SkCodec::kSuccess)
+    return nullptr;
+
+  SkiaSurface* sur = new SkiaSurface();
+  sur->swapBitmap(bm);
+  return sur;
+}
+
+// static
+sk_sp<SkColorSpace> SkiaSurface::colorSpace()
+{
+#if 0 // TODO Add support to different color spaces
+  if (!m_colorSpace)
+    m_colorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+#endif
+  return m_colorSpace;
+}
+
+} // namespace she