Index: src/lazy/SkDiscardablePixelRef.h |
diff --git a/src/lazy/SkDiscardablePixelRef.h b/src/lazy/SkDiscardablePixelRef.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4ccfce6286c5403e5a3b2f5148402ca061285b92 |
--- /dev/null |
+++ b/src/lazy/SkDiscardablePixelRef.h |
@@ -0,0 +1,54 @@ |
+/* |
+ * Copyright 2013 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+ |
+#ifndef SkDiscardablePixelRef_DEFINED |
+#define SkDiscardablePixelRef_DEFINED |
+ |
+#include "SkPixelRef.h" |
+#include "SkImageGenerator.h" |
+#include "SkImageInfo.h" |
+ |
+class SkDiscardableMemory; |
+ |
+/** |
+ * An interface that allows a purgable PixelRef to re-decode an image. |
+ */ |
+ |
+class SkDiscardablePixelRef : public SkPixelRef { |
+public: |
+ /** |
+ * Takes ownership of SkImageGenerator. |
+ * Will modify SkBitmap |
+ */ |
+ static bool Install(SkImageGenerator* generator, SkBitmap* destination); |
+ |
+ SK_DECLARE_UNFLATTENABLE_OBJECT() |
+ |
+protected: |
+ ~SkDiscardablePixelRef(); |
+ virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE; |
+ virtual void onUnlockPixels() SK_OVERRIDE; |
+ virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; } |
+ |
+ virtual SkData* onRefEncodedData() SK_OVERRIDE { |
+ return fGenerator->refEncodedData(); |
+ } |
+ |
+private: |
+ SkImageGenerator* fGenerator; |
+ SkDiscardableMemory* fDiscardableMemory; |
+ SkImageInfo fInfo; |
scroggo
2013/11/19 22:19:27
Can fInfo, fSize, and fRowBytes be const?
hal.canary
2013/11/20 00:07:10
Done.
Even the pointer can be const (but not the
|
+ size_t fSize; // size of memeory to be allocated |
scroggo
2013/11/19 22:19:27
memory*
hal.canary
2013/11/20 00:07:10
Done.
|
+ size_t fRowBytes; // ??? |
scroggo
2013/11/19 22:19:27
???
hal.canary
2013/11/20 00:07:10
Done.
|
+ |
+ /* Takes ownership of SkImageGenerator. */ |
+ SkDiscardablePixelRef(SkImageGenerator* generator, |
+ const SkImageInfo& info, |
+ size_t size, |
+ size_t rowBytes); |
+}; |
+#endif // SkDiscardablePixelRef_DEFINED |