Prototype of RAW decoding in Skia.

src/codec/SkCodec.cpp

Index: src/codec/SkCodec.cpp
diff --git a/src/codec/SkCodec.cpp b/src/codec/SkCodec.cpp
index 87a7ded7dd6bd2e0c0a6da19de1d9782a50553c3..d51ba2a6d77472e3bf53af28c69060966ed92604 100644
--- a/src/codec/SkCodec.cpp
+++ b/src/codec/SkCodec.cpp
@@ -16,6 +16,9 @@
 #if !defined(GOOGLE3)
 #include "SkJpegCodec.h"
 #endif
+#ifdef SK_CODEC_DECODES_RAW
+#include "SkRawCodec.h"
+#endif
 #include "SkStream.h"
 #include "SkWebpCodec.h"
 
@@ -85,6 +88,13 @@ SkCodec* SkCodec::NewFromStream(SkStream* stream,
                 break;
             }
         }
+
+#ifdef SK_CODEC_DECODES_RAW
+        // Try to treat the input as RAW if all the other checks failed.
+        if (!codec && streamDeleter) {

[scroggo, 2016/01/14 15:26:38]

As stated before, we should never have a codec if (streamDeleter). This code
should instead say:

if (streamDeleter) {
    SkASSERT(!codec);

[yujieqin, 2016/01/15 14:49:30]

Done.

+            codec.reset(SkRawCodec::NewFromStream(streamDeleter.detach()));
+        }
+#endif
     }
 
     // Set the max size at 128 megapixels (512 MB for kN32).