Prototype of RAW decoding in Skia.

src/core/SkStreamPriv.h

Index: src/core/SkStreamPriv.h
diff --git a/src/core/SkStreamPriv.h b/src/core/SkStreamPriv.h
index b82f7d84e9de0227705f864e4fe3724cbdc0aefb..9d3bfee300d4e8f95312d964b645afff07628bea 100644
--- a/src/core/SkStreamPriv.h
+++ b/src/core/SkStreamPriv.h
@@ -9,6 +9,7 @@
 #define SkStreamPriv_DEFINED
 
 class SkAutoMalloc;
+class SkDynamicMemoryWStream;
 class SkStream;
 class SkStreamRewindable;
 class SkData;
@@ -48,5 +49,6 @@ SkStreamRewindable* SkStreamRewindableFromSkStream(SkStream* stream);
  *  Does not rewind the input stream.
  */
 bool SkStreamCopy(SkWStream* out, SkStream* input);
+bool SkStreamCopyToDynamicMemoryW(SkDynamicMemoryWStream* out, SkStream* input);

[scroggo, 2016/01/11 17:44:02]

Reviewing this has forced me to take a long hard look at the methods in
SkStreamPriv.

I think we should move towards less versions of copying entire streams, rather
than more. (I've filed skbug.com/4788 to track this, which has some more
detail.)

To sum up: I don't think this function is necessary. I think you should call
SkStreamCopy from your code, and not mess with this file. (When I suggested
refactoring SkCopyStreamToStorage, I did not realize how many versions of the
same code we had.)

Taken a step further, you can just make the SkDynamicMemoryWStream your read and
write buffer. It is an SkWStream, so you can pass it to the existing
SkStreamCopy. It also has an interface that allows for reading. So rather than
copying it to a single contiguous block of memory, you can just call
SkDynamicMemoryWStream::read() in DoRead and GetData.

[yujieqin, 2016/01/13 15:29:41]

reverted.

 
 #endif  // SkStreamPriv_DEFINED