Add RAW decoding into Skia.

TBR=reed@google.com

BUG=skia:

(Based on the work from ebrauer in https://codereview.chromium.org/1459473007)
(Based on the work from adaubert in https://codereview.chromium.org/1494003003)
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1520403003

Committed: https://skia.googlesource.com/skia/+/6bd8639f8c142eedf543f4e5f3b02d2bf11df308

Review URL: https://codereview.chromium.org/1520403003

1 files changed, 42 insertions, 0 deletions

diff --git a/src/codec/SkRawAdapterCodec.h b/src/codec/SkRawAdapterCodec.h
new file mode 100644
index 0000000000..b552f2aaea
--- /dev/null
+++ b/src/codec/SkRawAdapterCodec.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkRawAdapterCodec_DEFINED
+#define SkRawAdapterCodec_DEFINED
+
+#include "SkAndroidCodec.h"
+#include "SkCodec.h"
+#include "SkEncodedFormat.h"
+#include "SkRawCodec.h"
+#include "SkStream.h"
+#include "SkTypes.h"
+
+/**
+ *  This class implements the functionality of SkAndroidCodec. It uses an
+ *  SkRawCodec.
+ */
+class SkRawAdapterCodec : public SkAndroidCodec {
+public:
+
+    explicit SkRawAdapterCodec(SkRawCodec*);
+
+    virtual ~SkRawAdapterCodec() {}
+
+protected:
+
+    SkISize onGetSampledDimensions(int sampleSize) const override;
+
+    bool onGetSupportedSubset(SkIRect* /*desiredSubset*/) const override { return false; }
+
+    SkCodec::Result onGetAndroidPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
+            const AndroidOptions& options) override;
+
+private:
+
+    typedef SkAndroidCodec INHERITED;
+};
+#endif // SkRawAdapterCodec_DEFINED