miniz support in SkFlate / PDF

src/core/SkFlate.h

 
 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkFlate_DEFINED
 #define SkFlate_DEFINED
 
 #include "SkTypes.h"
 
 #ifndef Sk_NO_FLATE
 
 class SkData;
-class SkWStream;
-class SkStream;
+#include "SkStream.h"

[scroggo, 2015/02/26 17:56:53]

nit: Don't we typically place includes above class declarations? (Actually our
coding style guidelines don't specify that, but they do say "Forward
declarations and file includes should be in alphabetical order (but we aren't
very strict about it)," which could be taken to mean they should be
interspersed, but I haven't typically seen that.)

[mtklein, 2015/02/26 18:00:16]

I guess 'c' does come after '#'...

 
 /** \class SkFlate
     A class to provide access to the flate compression algorithm.
 */
 class SkFlate {
 public:
     /**
      *  Use the flate compression algorithm to compress the data in src,
      *  putting the result into dst.  Returns false if an error occurs.
      */
@@ skipping 10 matching lines @@
      *  putting the result into dst.  Returns false if an error occurs.
      */
     static bool Deflate(const SkData*, SkWStream* dst);
 
     /** Use the flate compression algorithm to decompress the data in src,
         putting the result into dst.  Returns false if an error occurs.
      */
     static bool Inflate(SkStream* src, SkWStream* dst);
 };
 
+class SkDeflateWStream : public SkWStream {
+public:
+    /** Does not take ownership of the stream. */
+    SkDeflateWStream(SkWStream*);
+
+    /** The destructor calls finalize(). */
+    ~SkDeflateWStream();
+
+    /** Write the end of the compressed stream.  All subsequent calls to
+        write() will fail. Subsequent calls to finalize() do nothing. */
+    void finalize();
+
+    // The SkWStream interface:
+    bool write(const void*, size_t) SK_OVERRIDE;
+    size_t bytesWritten() const SK_OVERRIDE;
+
+private:
+    struct Impl;
+    SkAutoTDelete<Impl> fImpl;
+};
+
 #endif  // SK_NO_FLATE
 #endif  // SkFlate_DEFINED