Index: include/core/SkMallocPixelRef.h |
diff --git a/include/core/SkMallocPixelRef.h b/include/core/SkMallocPixelRef.h |
index 2241a513e7ea223ac8ddeac340bf8f73ee92d2ca..30e95dbccd326f5a6eea9fd09ecb0a327b119552 100644 |
--- a/include/core/SkMallocPixelRef.h |
+++ b/include/core/SkMallocPixelRef.h |
@@ -17,32 +17,60 @@ |
*/ |
class SkMallocPixelRef : public SkPixelRef { |
public: |
- /** Allocate the specified buffer for pixels. The memory is freed when the |
- last owner of this pixelref is gone. If addr is NULL, sk_malloc_throw() |
- is called to allocate it. |
+ /** |
+ * Return a new SkMallocPixelRef with the provided pixel storage, rowBytes, |
+ * and optional colortable. The caller is responsible for managing the |
+ * lifetime of the pixel storage buffer, as the pixelref will not try |
+ * to delete the storage. |
+ * |
+ * This pixelref will ref() the specified colortable (if not NULL). |
+ * |
+ * Returns NULL on failure. |
*/ |
- SkMallocPixelRef(void* addr, size_t size, SkColorTable* ctable, bool ownPixels = true); |
- virtual ~SkMallocPixelRef(); |
+ static SkMallocPixelRef* NewDirect(const SkImageInfo&, void* addr, |
+ size_t rowBytes, SkColorTable*); |
+ |
+ /** |
+ * Return a new SkMallocPixelRef, automatically allocating storage for the |
+ * pixels. If rowBytes are 0, an optimal value will be chosen automatically. |
+ * If rowBytes is > 0, then it will be respected, or NULL will be returned |
+ * if rowBytes is invalid for the specified info. |
+ * |
+ * This pixelref will ref() the specified colortable (if not NULL). |
+ * |
+ * Returns NULL on failure. |
+ */ |
+ static SkMallocPixelRef* NewAllocate(const SkImageInfo& info, |
+ size_t rowBytes, SkColorTable*); |
- //! Return the allocation size for the pixels |
- size_t getSize() const { return fSize; } |
void* getAddr() const { return fStorage; } |
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMallocPixelRef) |
protected: |
- // overrides from SkPixelRef |
- virtual void* onLockPixels(SkColorTable**); |
- virtual void onUnlockPixels(); |
+ virtual bool onGetInfo(SkImageInfo*) SK_OVERRIDE; |
+ virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE; |
+ virtual void onUnlockPixels() SK_OVERRIDE; |
+ virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; |
SkMallocPixelRef(SkFlattenableReadBuffer& buffer); |
- virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; |
+ SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*, |
+ bool ownsPixels); |
+ virtual ~SkMallocPixelRef(); |
private: |
- void* fStorage; |
- size_t fSize; |
- SkColorTable* fCTable; |
- bool fOwnPixels; |
+ void* fStorage; |
+ SkColorTable* fCTable; |
+ size_t fRB; |
+ SkImageInfo fInfo; |
+ const bool fOwnPixels; |
+ |
+ size_t computeMinSize() const { |
+ if (fInfo.fHeight == 0) { |
+ return 0; |
+ } |
+ return (fInfo.fHeight - 1) * fRB + fInfo.minRowBytes(); |
+ } |
typedef SkPixelRef INHERITED; |
}; |